identification of enemy units

fix enemy units

overwhelm an enemy / overwhelm the enemy

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

civilian relief units

combat-ready units

designated units

fill out units

formed police units

halting or bunching (of units)

intelligence staff officer (brigade, battalion & armored cavalry units level) (S2)

internal security units

multinational special units operations (MSUOPS)

rotation of units

combined arms units and formations continuous artillery combat support

para-military secessionist units

units to round-out the active Army

cross-reinforced units

unification of units of measurement panel

metric units (MU)

preservation of pipes and fuel units

administer units

site survey for missile and artillery units

aerospace vehicle identification

automated identification technology (AIT)

automatic identification system (AIS)

force identification

identification beacon

identification card (identity / ID card)

identification operator

identification tag; ID tag; (slang. dog tag)

item identification (logistics)

national identification means