President Ronald Reagan, Queen Elizabeth II, first lady Nancy Reagan and Prince Philip pose for photographers at Windsor Castle in June of 1982. During the visit, Reagan and the queen rode horses through the castle’s private Home Park for an hour. (Red Grandy/Stars and Stripes)

Queen Elizabeth II and Prince Philip of England wave to the crowd in May of 1975 as they ride from the Imperial Hotel to the National Theater. With her six-day visit, Elizabeth became the first reigning British monarch to go to Japan. Philip, the Duke of Edinburgh, died April 9, 2021, at age 99. (Hideyuki Mihashi/Stars and Stripes)

Queen Elizabeth II and Princess Takamatsu admire an Ikebana flower arrangement at the Japanese-style annex of the Akasaka Palace on May 8, 1975. The Queen and her husband, the Duke of Edinburgh, arrived in Tokyo May 7 for a six-day state visit. The royal couple stayed at the Akasaka Palace guest house. The visit was the first by a reigning monarch of Great Britain. (Hideyuki Mihashi/Stars and Stripes)

Queen Elizabeth II walks to the plane at the conclusion of her 1975 visit to Japan. (Hideyuki Mihashi/Stars and Stripes)

Queen Elizabeth II and Prince Philip stand in a Cadillac Eldorado convertible as they ride from Tokyo’s Imperial Hotel to the National Theatre, May 9, 1975. The vehicle was delivered to the Japanese National Police Agency just a few days prior to the visit and was reportedly bought at 7 million yen. After the Queen’s departure, the vehicle was to be used by the Japanese emperor. (Hideyuki Mihashi/Stars and Stripes)

President Ronald Reagan and Queen Elizabeth II, out for a ride at Windsor Castle in 1982. (Red Grandy/Stars and Stripes)

President Ronald Reagan and Queen Elizabeth II went horseback riding at Windsor Castle in 1982. (Red Grandy/Stars and Stripes)

Queen Elizabeth II (front left) joins other heads of state at the 50th anniversary of the D-Day landing on Omaha Beach in June of 1994. (Ken George/Stars and Stripes)

Heads of state at the 50th anniversary of the D-Day landing on Omaha Beach June 6, 1994. From left to right and visible: King Albert II of Belgium, King Harald V of Norway, Queen Beatrix of The Netherlands, Queen Elizabeth of Great Britain, French President Francois Mitterrand (with his Prime Minister Eduard Balladur behind him on the right), U.S. President Bill Clinton, Czech President Vaclav Havel, and Slovak President Michal Kovac. Visible behind Kovac is Belgium Prime Minister Jean-Luc Dehaene. (Ken George/Stars and Stripes)