Pincer movement is a type of military strategy. It's like a game of tag, but with weapons and armies! You need two armies to do a pincer movement. Basically, one army moves up from one side towards the enemy and the other army moves up from the other side. The goal is to trap the enemy in the middle so they can't escape. The two armies then attack the enemy at the same time, so they don't have any chance to get away or fight back. It's a good strategy for winning a battle!