The XV are split into two sections - the forwards and the backs. The forwards are the fatties with a face only a mother could love who are tasked with driving the ball forward an inch at a time, recovering it when it goes to ground and inflicting terrible vengeance and furious anger on anyone who gets in their way. The backs are (slightly) smaller, quicker and it's their job to run with the ball... and also to recover it when it goes to ground and inflict terrible vengeance and furious anger on anyone who gets in their way.