This multi-Service tactics, techniques, and procedures manual provides operational contract support (OCS) guidance for Army, Navy, and Marine Corps commanders, their non-acquisition officer staff, and their servicing contracting organizations. It serves as the primary reference document for the planning and execution of OCS and associated functions and tasks at the tactical level. It incorporates the latest guidance found in JP 4-10, dated 4 March 2019 and other associated regulatory guidance. Sustaining large-scale combat operations depends on OCS—the process of planning for and obtaining supplies, services, and construction from commercial sources. While varying in scope and scale, OCS is a critical force multiplier during all types of operations.
DesignationATP 4-10
EditionDec 2025
StatusActive
ProponentT2COM
Pages106
FunctionSustainment
CollectionCurrent Doctrine
approved for public release; distribution is unlimited. This publication supersedes ATP 4-10/MCRP 3-40B.6/NTTP 4-09.1,