 The squadron flew the British Boston III light bomber.The 15th was originally part of the 27th Bombardment Group (Light), based in the Philippine Islands, however the group's planes (A-24's), did not arrive by 7 December 1941.Due to the deteriorating situation in the Philippines after the Japanese attack, they were diverted to Australia where they reformed into a combat unit and fought in the Dutch East Indies and New Guinea Campaigns.