Number 25 (Fighter) Squadron is a squadron of the Royal Air Force having reformed on 8 September 2018.

Max Immelmann PLM was the first German World War I flying ace. He was a pioneer in fighter aviation and is often mistakenly credited with the first aerial victory using a synchronized gun, which was in fact achieved on 1 July 1915 by the German ace Kurt Wintgens. He was the first aviator to receive the Pour le Mérite, colloquially known as the "Blue Max" in his honour, being awarded it at the same time as Oswald Boelcke. His name has become attached to a common flying tactic, the Immelmann turn, and remains a byword in aviation. He is credited with 15 aerial victories.