There are constant encounters between players during the match. Players fight for the ball, for position, they try to outrun each other and win the battle for the header. Each of these encounters (battles) makes the result of the game. The more battles like these you win the better you play, the more possession of the ball you have and the more opportunities to score you get.
This set of drills will teach your players to come out as winners from such encounters and as a result your team will be winning more games.