But even this concession to nondiscrimination was never approved, for the Plans and Policies Division ran afoul of a basic fact of segregation: the postwar strength of many elements of the Marine Corps was too small to support separate racial units. The Director of Aviation, for example, argued that because of the size and nature of his operation, segregated service was impossible. A substantial number of his enlisted men also did double duty by serving in air stations where Negroes could not be segregated, he explained. Only completely separate aviation units, police and maintenance, and construction units would be available for Negroes, a state of affairs "which would be open to adverse criticism." He recommended instead that Negroes in aviation be used only as stewards.[6-55] He failed to explain how this solution would escape adverse criticism. [Footnote 6-55: Memos, Dir, Aviation, for CMC, 26 Apr 46, sub: Negro Personnel in the Post-War Marine Corps, and 31 May 46, sub: Enlistment of Negroes "For Duty in Aviation Units Only."] General Thomas rejected these proposals, repeating that Secretary Forrestal's nondiscrimination policy demanded that a separate but equal system be extended throughout the Marine Corps. He also borrowed one of the Gillem Board's arguments: Negroes must be trained in the postwar military establishment in every occupation to serve as a cadre for future general mobilizations.[6-56] Thomas did not mention the fact that although large branches such as Fleet Marine Force aviation could maintain separate but equal living facilities for its black marines, even they would have to provide partially integrated training and working conditions. And the smaller organizations in the corps would be forced to integrate fully if forced to accept black marines. In short, if the corps wanted segregation it must pay the price of continued discrimination against black marines in terms of numbers enlisted and occupations assigned. [Footnote 6-56: Div of Plans and Policies (signed G. C. Thomas), Consideration of Non-Concurrence, 2 May 46, attached to Memo, Dir, Aviation, for CMC, 26 Apr 46.]