Operational Group Command was made up of Operational Groups (OGs), which were originally created on 23 December 1942 as a division within the OSS Special Operations Branch (SO), before achieving Branch status.[4]
One key distinction between SO units and the OGs might be the fact that OGs were always dressed in military uniform, and were deployed within the military command structure, whereas SO units were civilian units, often assuming cover identities.[2]
Command structure
The OGs had a dual leadership command structure.[3] While OGs were deployed in the field, they were under the tactical planning authority of the Theatre Commander, and the strategic planning authority of the Director of the OSS, William Donovan.[3]