under development

integrated mine action and development (linking mine action and development)

Cooperative Research and Development Agreements (CRADA)

crash development

development and maintenance of morale

development of military capability

development of the armed forces

foot march under packs

force development

hand-held under-barrel grenade launcher

integrated scenario development

Joint Capabilities Integration and Development System (JCIDS)

military development

obstacle development

operational development force

research and development (R&D)

research, development, test, and evaluation (RDT&E)

restricted area (under military jurisdiction)

surveillance, under surveillance

system development

topographic-database development

under armor auxiliary power unit (UAAPU)

under arms

under barrel grenade launcher (UBGL)

under canvas

under command of

under cover of

under fire

under hatches

Under Secretary of Defense (USD)

Under Secretary of Defense for Acquisition, Technology, and Logistics (USD AT&L)

Under Secretary of Defense for Intelligence USD(I)

under-strength unit