In warfare, ramming is a technique that was used in air, sea and land combat. The term originated from battering ram, a siege weapon used to bring down fortifications by hitting it with the force of the ram's momentum. Thus, in warfare ramming refers to hitting a target by running oneself into the target.
Today, hand-held battering rams are one tool among many used by law enforcement and military personnel for door breaching.Forcible entry by criminals has been implemented using such methods as vehicles rammed into buildings.