Editing Combat engineer (section)

=== Countermobility ===
Building obstacles to prevent the enemy from moving around the battlefield. Destroying bridges, blocking roads, creating airstrips, digging trenches, etc. Can also include planting [[land mine]]s and [[anti-handling device]]s when authorized and directed to do so.{{citation needed| date=June 2018}}

When the defender must [[retreat (military)|retreat]] it is often desirable to destroy anything that may be of use to the enemy, particularly bridges, as their destruction can slow the [[Offensive (military)|advance]] of the attackers.
* Planting land mines
* Digging trenches and ditches
* Demolishing roads and bridges