LAX Field Positions

• ATTACK: The attackman's responsibility is to score goals. He generally restricts his play to the offensive end.
• MIDFIELD: The midfielder's responsibility is to cover the entire field playing both offense and defense.
• DEFENSE: The defenseman's responsibility is to defend the goal. He generally restricts his play to the defensive end of the field.
• GOAL: The goalie's responsibility is to protect the goal and stop the opposing team from scoring.

visit Sports Spectator for a nice breakdown on this topic, also the source of the graphic.