Glossary

Chopper	An helicopter
Slick	A chopper employed as a troop carrier
Gun ship	A chopper employed as an airborne gun platform
Champagne Flight	A flight after a patrol has been picked up following a patrol operation that has resulted in enemy killed
KIA	Killed In Action
WIA	Wounded In Action
MIA	Missing In Action
DOW	Died Of Wounds
Rappelling	Sliding down a rope attached to a helicopter, The object was to insert a patrol away from normal landing zones that the enemy may be observing, The patrol would all go at the same time.
Extraction	Bringing a patrol out of an area of operation
Hot Extraction	Bringing a patrol out of an area of operation. The Extraction method was to lower a rope from a helicopter while it hovered at some height above the ground, the patrol would hook onto the rope in two's and threes and still hanging below the helicopter would fly to a landing zone considered to be relatively safe, where the helicopter would lower the patrol to the ground, they would unhook, the helicopter would then land and the patrol would clamber aboard and be flown home
L.Z.	Landing Zone
D.Z.	Drop Zone. The area that a parachute descent would take place
Lay Up	A position of defence that a patrol would assume a break, often referring to a stop of short duration, though sometimes for a longer period
OTLP	one Time Letter Pad. A code system where a patrol used a page of code in the book that had it's matching book back at base. Each page would be used only once
POO	Point Of Origin A map referencing system where grid references of the map where used as a point of origin rather than a patrol giving their direct grid reference as to their position, remembering that the enemy could read maps to, they used several grid references prearranged to be a point of origin.