Definition
A tight formation of soldiers lined up single-file against a wall, preparing to breach a room or building. It's basically tactical spooning with body armor and loaded weapons.
Example Usage
Alpha team, get in a stack on the left side of the door—we're breaching in thirty seconds.
Origin
Derived from close-quarters battle tactics developed in the late 20th century
Fun Fact
The proper spacing in a stack is close enough to maintain contact but far enough that one grenade won't take out the entire team—a calculation that keeps training instructors employed.
Source: Infantry and special operations tactical procedures
Related Terms
Translate This Term
See “stack” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
Try the Translator