No. 455 Squadron was a Royal Australian Air Force (RAAF) and was to become a torpedo bomber squadron during World War II and became famous as part of the "ANZAC Strike Wing" that was formed from Australian and New Zealand squadrons. 455 Squadron as its "400" series number indicates, was an Article XV Squadron of the RAAF raised under the Empire Air Training Scheme in WW 2.

The squadron received Hampden bombers and the bulk of the Australian personnel arrived on 1 September 1941, having departed Australia on 15 June. Initially assigned to No. 5 Group RAF, Bomber Command in a bomber role its first operation took place while the squadron was still forming, when a single Hampden attacked Frankfurt at night on 29 August. In doing so, according to the Australian War Memorial, the squadron had the distinction of becoming the "first Australian squadron to bomb Germany"

The squadron mainly undertook anti-shipping and anti-submarine operations during the war. In August 1943, Hampden torpedo bombers of No 455 Squadron RAAF attacked a convoy off the Norwegian coast.

This aircraft (L4105/D) suffered massive flak damage to its tail - half the elevator was blown away, the starboard fin twisted and the port rudder fouled by debris. The crew were forced to lash a rope around the rudder bar and took turns helping the pilot, Flying Officer Iain Masson, hold the aircraft straight as they limped back to Leuchars for a crash-landing.

Initially part of Bomber Command it was later re-assigned to Coastal Command in the anti-shipping Maritime Strike role operating Handley Page Hampdens and Bristol Beaufighters.

Australian losses amongst the squadron's personnel during the war amounted to 91 killed. Between April 1942 and the end of the war, it was credited with sinking 18 vessels: one U-boat, 10 merchantmen, three escorts and four minesweepers.