A term in football referring to the space directly in and around the offensive and defensive line. This is where most of the blocking takes place and where the defense has the best chance of stopping an offensive play at the line of scrimmage.
Sometimes referred to as "battlefield."
Most plays are decided by what happens in the trenches, although this is often the least glamorous part of football. The biggest players on offense and defense struggle over control of the line of scrimmage in the trenches. Offensive and defensive linemen can create disruptions at the line of scrimmage that determine the outcome of the entire game. Winning the trench battle means creating disruptions to the other team's plan. Battles in the trenches are fierce and fast and many injuries occur along the line of scrimmage for this reason.