The Army Air Forces, another large employer of black servicemen, reported a slightly different World War II experience. Conforming with departmental policies on utilizing black soldiers, it had selected Negroes for special training on the same basis as whites with the exception of aviation cadets. Negroes with a lower stanine (aptitude) had been accepted in order to secure enough candidates to meet the quota for pilots, navigators, and bombardiers in the black units. In its preliminary report to the War Department on the employment of Negroes, the Army Air Forces admitted that individuals of both races with similar aptitudes and test scores had the same success in technical schools, could be trained as pilots and technicians in the same period of time, and showed the same degree of mechanical proficiency. Black units, on the other hand, required considerably more time in training than white units, sometimes simply because they were understrength and their performance was less effective. At the same time the Air Forces admitted that even after discounting the usual factors, such as time in service and job assignment, whites advanced further than blacks. No explanation was offered. Nevertheless, the commanding general of the Air Forces reported very little racial disorder or conflict overseas. There had been a considerable amount in the United States, however; many Air Forces commanders ascribed this to the unwillingness of northern Negroes to accept southern laws or social customs, the insistence of black officers on integrated officers' clubs, and the feeling among black fliers that command had been made an exclusive prerogative of white officers rather than a matter depending on demonstrated qualification. In contrast to the others, the Army Air Forces revealed a marked change in sentiment over the post-World War I studies of black troops. No more were there references to congenital inferiority or inherent weaknesses, but everywhere a willingness to admit that Negroes had been held back by the white majority. The commanding general of the Army Air Forces recommended Negroes be apportioned among the three major forces--the Army Ground Forces, the Army Service Forces, and the Army Air Forces--but that their numbers in no case exceed 10 percent of any command; that black servicemen be trained exactly as whites; and that Negroes be segregated in units (p. 141) not to exceed air group size. Unlike the others, the Army Air Forces wanted black units to have black commanders as far as possible and recommended that the degree of segregation in messing, recreation, and social activities conform to the custom of the surrounding community. It wanted Negroes assigned overseas in the same proportion as whites, and in the United States, to the extent practicable, only to those areas considered favorable to their welfare. Finally, the Air Forces wanted Negroes to be neither favored nor discriminated against in disciplinary matters.[5-47]