Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021.(AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021.(AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, receives flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, holds flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021.(AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, holds flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, holds flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, received flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

The Very Reverend David Hoyle, Dean of Westminster, speaks as Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

The Very Reverend David Hoyle, Dean of Westminster, speaks as Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Princess Anne speaks during a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Naomi Hall gives testimony as Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021.( AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, followed by Britain's Princess Anne, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (Arthur Edwards/Pool Photo via AP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (Arthur Edwards/Pool Photo via AP)

Britain's Queen Elizabeth II, followed by Britain's Princess Anne, right, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (Arthur Edwards/Pool Photo via AP)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, and Britain's Princess Anne arrive to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II, Patron, arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey, in London, Tuesday, Oct. 12, 2021. (AP Photo/Frank Augstein, Pool)

Britain's Queen Elizabeth II (R) and Britain's Princess Anne, Princess Royal (L) arrive to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Arthur Edwards / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Arthur Edwards / POOL / AFP)

Britain's Queen Elizabeth II (R) and Britain's Princess Anne, Princess Royal (L) arrive to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (R) receives flowers from a well-wisher as she attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (C) departs after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (C) and Britain's Princess Anne, Princess Royal (5L) depart after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (R) receives flowers from a well-wisher as she attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (C) and Britain's Princess Anne, Princess Royal (R) depart after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II (C) and Britain's Princess Anne, Princess Royal (2nd R) depart after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by ARTHUR EDWARDS / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (C) arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (C) smiles as she arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (L) and Britain's Princess Anne, Princess Royal (R) attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (L) and Britain's Princess Anne, Princess Royal (R) attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (L) and Britain's Princess Anne, Princess Royal (R) attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (L) and Britain's Princess Anne, Princess Royal (R) attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (L) and Britain's Princess Anne, Princess Royal (R) attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II attends a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (C) leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (R) receives flowers as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Princess Anne, Princess Royal speaks during a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II smiles as she leaves after attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

The Very Reverend David Hoyle, Dean of Westminster speaks during a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

The Very Reverend David Hoyle, Dean of Westminster speaks during a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II arrives to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

Britain's Queen Elizabeth II (C) and Britain's Princess Anne, Princess Royal (L) arrive to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion at Westminster Abbey in London on October 12, 2021. - The Royal British Legion has been celebrating its 100th Anniversary throughout 2021 with a special programme of activity, paying tribute to those who have contributed to its proud history and celebrating with the communities across the UK and around the world who are at its heart. (Photo by Frank Augstein / POOL / AFP)

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: QUEEN ELIZABETH II is seen leaving Westminster Abbey attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: QUEEN ELIZABETH II is seen leaving Westminster Abbey attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: QUEEN ELIZABETH II is seen leaving Westminster Abbey attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: QUEEN ELIZABETH II is seen leaving Westminster Abbey attending a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342

October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. 12 Oct 2021 Pictured: October 12, 2021, London, England, United Kingdom: Secretary of State for Defence BEN WALLACE arrives at Westminster Abbey to attend a Service of Thanksgiving to mark the Centenary of the Royal British Legion. Photo credit: ZUMAPRESS.com / MEGA TheMegaAgency.com +1 888 505 6342