 At the same time, the HQ, 15th MP Brigade and half of the USAREUR Office of the Provost Marshal staff moved into part of Building 333 (15th had been on ROB Kaserne in Kaiserslautern and OPM came from Building 7, Campbell Bks, Heidelberg).The USAREUR Provost Marshal had become the Mannheim Community Commander, assisted by a deputy community commander who managed nearly 1,400 soldiers and civilians of the new U.S. Military Community Activity-Mannheim created as one of the 21st SUPCOM communities.USMCA-Mannheim provided base operations support for tenant units in the Mannheim area with its headquarters staff in Building 335 on Taylor and other sections in various buildings around the post.