The 27th Bombardment Group, equipped with Douglas B-18 Bolo medium bomber aircraft was the first assigned unit to the new airfield. The 27th was reassigned to the field from Barksdale Field, Louisiana. The group consisted of the 15th, 16th and 17th Bombardment Squadrons. In 1941, the group was reequipped with Douglas A-24 Banshee Dive Bombers, and on 21 October 1941 the group was ordered to the Philippine Islands in response to the growing crisis in the Pacific. The 27th returned to Hunter, without personnel or equipment on 4 May 1942 after being severely depleted in strength during the Battle of the Philippines (1942), and subsequent combat in the Dutch East Indies and New Guinea Campaigns (1942). The unit was reequipped with A-20 Havocs, remanned and retrained at Hunter. It was then deployed for combat with Twelfth Air Force in North Africa in July 1942.