Squadron when it formed here on 15 November 1941 with Vickers Wellington IVs. No 460 Squadron departed Molesworth on 4 January 1942. RAF Bomber Command 159 squadron moved in shortly afterwards, however this unit did not remain long, moving to the Middle East on 12 January 1942. USAAF use Molesworth was one of the early Eighth Air Force stations allocated to the United States Army Air Forces (USAAF). In February 1942 General Ira Eaker and four US staff members inspected Molesworth for possible American use, and during 1942 the facility was improved to Class A airfield standard, with all of its runways extended to American specifications for heavy 4-engined bombers. The main runway was lengthened to 2,000 yards and the number of hardstands increased to fifty. It was given USAAF designation as Station 107. 15th Bombardment Squadron The first USAAF tenant on Molesworth was the 15th Bombardment Squadron, arriving on 9 June 1942 from RAF Grafton Underwood. The squadron flew the Douglas Boston III (A-20) light bomber. The 15th was originally part of the 27th Bombardment Group (Light), assigned to Fifth Air Force in the Philippine Islands. However the group's planes did not arrive by 7 December 1941, and due to the deteriorating situation in the Philippines after the Japanese invasion, they were diverted to Australia. Surviving members of the group reformed into a combat unit in Australia and fought in the Dutch East Indies and New Guinea Campaigns. When the 27th Bombardment Group was inactivated and transferred back to the United States for re-equipping, the surviving members of the group were first transferred back to the United States, then to the UK in May where they received their Bostons from No. 226 Squadron RAF. After a few weeks of familiarisation training with the new aircraft, on 4 July 1942, six American crews from the 15th Bomb Squadron joined with six RAF crews from RAF Swanton Morley for a low-level attack on Luftwaffe airfields in the Netherlands, becoming the first USAAF unit to bomb targets in Europe. The 4 July raid had been specifically ordered by General Henry H. "Hap" Arnold and approved by President Roosevelt. Arnold believed that 4 July would be an ideal day for the USAAF to open its strategic bombing campaign against the Nazis, but General Carl Spaatz did not have any of his heavy Eighth Air Force bomb groups ready for operational missions. Two of