It's a ruthless test of will, strength and balance. Every year cadets in Japan's Military Defense Academy go head-to-head in the game, which is called Bo-taoshi. It means "topple the pole." Each team has 150 players, which are split into attackers and defenders. The goal is to get the other team's pole down to a 30-degree angle. Medical staff waits on hand for inevitable injuries. InsideEdition.com's Mara Montalbano (https://twitter.com/MaraMontalbano) has more.