operational-level defense

counter IED operational / strategic level

operational level of war

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

surveyor's level (surveying level, tbc)

perimeter defense (all-around defense)

beach defense mine / beach-defense mine

combat operational stress control (COSC)

combat operational stress control service

common operational picture (COP)

contemporary operational environment / contemporary operating environment (COE)

contiguous operational area

full operational capability (FOC)

get fully operational

guidelines for operational planning (GOP)

immediate operational readiness

initial operational capability (IOC)

interim operational capability (IOC)

Joint Urgent Operational Need (JUON)

maritime operational logistic support

measures of operational effectiveness (MoOEs)

noncontiguous operational area

operational

operational activities

operational agency

operational aircraft

operational altitude

operational analysis (OA)

operational and tactical calculations

operational Army

operational art

operational assets

operational attrition