day-to-day forces support

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

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

day-sight (day sight)

day-to-day issue

M-day mobile ground forces

Army (ground forces / land forces)

naval surface forces, surface fleet, surface forces

Armed Forces Supply Support Center

logistics support forces

combat support and service forces

Gunfire Support Group (Naval Forces)

fire support coordinator / fire-support coordinator (FSCOORD)

tactical support syn. combat support

captain of the day

C-day

day of supply (DOS)

D-Day

E-day

G-day

M-day

officer of the day

one day’s supply

order of the day

rig of the day

standard day of supply (SDOS)

daysack, assault sack / pack, patrol / day pack, Northern Ireland (NI) patrol sack

field day

day sight

day/night combat sight

day/night laser sight

day/night periscopic sight

day/night thermal sight