furnish service to troops in the field

furnish quartermaster service

furnish security

provide quartermaster service to troops

service troops

service with troops

chemical service troops

field officer (field-grade officer / senior officer)

combat field pack, field pack

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

combination field and field-off duty uniform

field service

side cap; garrison / flight cap (US); wedge cap (Canada); field service cap (UK)

field service technician (FST)

branch (military/service branch, armed service)

separate from active service / the service

Y service (Y-service) / Y-station

regional meteorological service/ regional weather service (RWS)

emergency service / emergency operations service

airborne troops

armored troops

barrier troops / blocking detachments (units) / anti-retreat forces

border (security) forces /troops

civil defense troops

coastal troops

concentration of troops

covering troops

crack troops

division troops

engineer troops (engr tps)

extraction of troops

forward line of own troops (FLOT)

government communications troops