A New Zealander, the only surviving pilot of those who flew the missions known as the Dam Buster raids in World War Two, has been guest of honour at the 65th anniversary commemoration in Britain.
Squadron Leader Les Munro said he felt a certain amount of pride that he had outlasted all the others.
During the commemorations, a Lancaster bomber, similar to the ones used in the attacks, was joined by Spitfires and Tornadoes in a stirring flypast in Derbyshire.
The WW2 Dam Buster aircraft carried 'bouncing bombs' to breach the walls of the German dams in the Ruhr Valley.
Of those who went on the mission on 16 May 1943, fifty-three men died and 11 returned.
Attending the commemorations in Derwent was 88-year-old actor Richard Todd, who starred in the famous 1954 movie The Dam Busters.
During the service he laid poppies on the waters of the reservoir at Derwent in Derbyshire, where the men trained for their daring mission.
Todd played the role of Wing Commander Guy Gibson in the movie.
Gibson's nephew Michael Gibson also attended the service.