internal security units

internal security

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

civilian relief units

combat-ready units

designated units

fill out units

fix enemy units

formed police units

halting or bunching (of units)

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

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

identification of enemy units

site survey for missile and artillery units

internal ballistics

foreign internal defense (FID)

interference in internal affairs

interior ballistics (internal ballistics)

internal armed conflict

internal arrangement

internal combustion

internal combustion engine (IC eng)

internal guidance system

internal threat