Army Ground Forces reported that it had formed some composite units, but its largest black unit, the 25th Regimental Combat Team, had been attached to the V Corps at Fort Jackson, South Carolina, instead of being made an organic element in a division. Practically all service group headquarters reported separate black and white battalions (p. 190) under their control, but many of the organizations in the Army Service Forces--those under the Provost Marshal General and the Surgeon General, for example--still had no black units, let alone composite organizations. The Caribbean Defense Command, the Trinidad Base Command, and the Headquarters Base Command of the Antilles Department reported similar situations. The Mediterranean theater was using some Negroes with special skills in appropriate overhead organizations, but in the vast European Command Negroes were assigned to separate regiments and smaller units. There were two exceptions: one provisional black regiment was attached to the 1st Infantry Division, and a black field artillery battalion was attached to each of the three occupation divisions. The Alaskan Department and the Okinawa Base Command had black units, both separate and grouped with white units, but the Yokohama Base Command continued to use specially skilled Negroes in black units because of the great demand for qualified persons in those units.[7-65] [Footnote 7-65: Memo, D/O&T for ASW, 18 Jul 46, sub: Organization of Negro Manpower in Postwar Army, WDGOT 291.2.] To claim, as Hall did to Assistant Secretary Petersen, that black units were being used like white units was misleading. Despite the examples cited in the survey, many black units still remained independent organizations, and with one major exception black combat units grouped with white units were attached rather than assigned as organizational elements of a parent unit. This was an important distinction.[7-66] The constant imposition of attached status on a unit that under normal circumstances would be assigned as an organic element of a division introduced a sense of impermanence and alienation just as it relieved the division commander of considerable administrative control and hence proprietary interest in the unit. [Footnote 7-66: An attached unit, such as a tank destroyer battalion, is one temporarily included in a larger organization; an assigned unit is one permanently given to a larger organization as part of its organic establishment. On the distinction between attached and assigned status, see Ltr, CSA to CG, CONARC, 21 Jul 55, CSUSA 322.17 (Div), and CMH, "Lineages and Honors: History, Principles, and Preparation," June 1962, in CMH.]