equipment and was assigned to the operational control of the Tenth Air Force over the objections of the commander of ATC, who feared that its planes and crews would be steered into combat units, which did in fact occur at times. Aircraft continued to arrive in small increments through October with flight crews consisting of airline pilots holding Air Corps Reserve commissions who had been called up for active duty specifically for the India-China assignment, and navigators, engineers and radiomen from the USAAF technical training schools. For the remainder of 1942, the 62 C-47s of the 1st Ferrying Group were the backbone of the airlift, flying both branches of the operation from Karachi until August, when it began a three months' relocation to Assam. In the first two months of the airlift the USAAF delivered only 700 tons of cargo and CNAC only 112 tons, and tonnage fell for both June and July, mostly as a result of the full onset of the summer monsoon. In July, CNAC quadrupled its tonnage to 221 tons, but 10AF C-47s brought only 85 net tons of materiel and personnel into China. Tate, 1942 On 17 June 1942, Haynes continued on to China to take up an assignment as bomber commander of the China Air Task Force, Tenth Air Force's eastern appendage commanded by Brig. Gen. Claire L. Chennault. Scott was left in command for several days before he too was ordered to China to command the first U.S. fighter group in the CATF. On 22 June Col. Robert F. Tate (who like Haynes was a bombardment officer) was named to replace Haynes, but he was also in charge of the Trans-India Command in Karachi and remained in that capacity. Lt. Col. Julian M. Joplin, acting at the direction of Naiden, for all practical purposes commanded India-China operations until 18 August. Tate took actual command on 25 August, when Naiden was forced to return to the United States, although like Naiden he delegated direction of airlift operations to Joplin. Effective 15 July 1942, the two branches of the India-China Ferry merged into the India-China Ferry Command, an organized component of the Tenth Air Force. Tate was immediately and severely handicapped when the best pilots and 12 aircraft of the airlift went west to Egypt with Brereton on 26 June. Despite the use of the 1st Ferrying Group, the buildup of the airlift grew very