preliminary rifle instruction (PRI)

pulse repetition interval (PRI)

anti-materiel rifle (AMR); large caliber (sniper) rifle

automatic heavy barrel rifle / heavy barrel automatic rifle

error of the rifle (error of the rifle)

preliminary bombardment

preliminary development (PD)

preliminary study

preliminary information pamphlet

preliminary order

preliminary order list

preliminary engineering inspection

Chairman of the Joint Chiefs of Staff Instruction (CJCSI)

Department of Defense Instruction (DODI)

exercise instruction

formal instruction

letter of instruction

package instruction

signal operation instruction

tactical instruction

combat instruction

instruction pamphlet / instructional pamphlet

academic classes that provide instruction on counterintelligence

driver's instruction

flight instruction

instruction plate

maintenance instruction

taxiing instruction

foundational classroom instruction

instruction unit

instruction

job classification instruction training

job instruction training