Nos.39, 41, 42 and 43 Squadrons, RAF

No.39 Squadron began and ended the Second World War as a regular bomber squadron, but spent the four years from January 1941-January 1945 operating as a maritime reconnaissance and anti-shipping squadron, serving around the Mediterranean.
No.41 Squadron operated the Supermarine Spitfire for the entire duration of the Second World War, taking part in the fighting over Dunkirk, the Battle of Britain and flying sweeps over occupied France before moving to Europe to join the Second Tactical Air Force.
No.42 Squadron began the Second World War as a torpedo bomber squadron equipped with the obsolete Vickers Vildebeest, and performed that role for the first half of the war. It then briefly operated in the Mediterranean at the time of the battle of El Alamein, before moving on to Burma, where it spent the remaining years of the war operating as a fighter bomber squadron.
No.43 Squadron fought as a Hurricane squadron during the Battle of Britain and in Operation Torch, then as a Spitfire squadron in North Africa and Italy.