ATP 3-21.51 Subterranean Operations – 2019 – BIG size

ATP 3-21.51, Subterranean Operations, is published to provide urgently needed guidance to plan, prepare for, and execute operations in subterranean environments.

Throughout history Armies used subterranean operations to achieve otherwise impossible objectives. Commanders built and used simple supply tunnels under castle fortifications and intricate entrance and exit tunnels to surprise the enemy with an overwhelming mass of force. Subterranean spaces were used to protect vulnerable populations, mission command and medical centers, equipment and supplies, and weapons systems.

Enemy forces continue to build subterranean systems or repurpose existing underground civil infrastructure to move, maneuver, sustain, prevent detection, and protect their assets. There are over 10,000 known military purposed subterranean systems worldwide and most urban cities have a significant civil network of subways, tunnels, and sewers. Similar to stability operations, subterranean systems may also have enemy combatants alongside civilians.

ATP 3-21.51 applies to the Active Army, Army National Guard/Army National Guard of the United States and United States Army Reserve unless otherwise stated.

This book is a “BIG” size (the size of a regular sheet of paper). This website also has the popular “mini” (half the size of a regular sheet of paper).

The binding is with coil, allowing easy flipping of pages without jamming.

The color covers are laminated for weather protection with black and white inside printing.