4-36. Operational contract support (OCS) is important in the sustainment of operations and helps obtain support for division or corps stability-focused operations. OCS augments other support capabilities by providing an additional source for required supplies and services. Because of the importance and specific challenges of OCS, commanders and staffs need to understand their role in planning for and managing contract support in an AO. (See ATP 4-10 for information regarding OCS roles and responsibilities.)