AT-AT trips up

during the Battle of Hoth the Rebels fly snowspeeders to attack approaching Imperial AT-AT Walkers. The Rebels fire harpoons (attached to tow cables) that stick to the Walker's legs. The snowspeeder flies around the Walker several times, wrapping the cable around the Walker's legs, then releases its end of the cable. When the Walker tries to take another step, it trips and falls to the ground.

Example of:
Hobbling the Giant