The term 'FOOTBALL Field Unit' can be broken down into two words: 'YARD' (4 letters) and 'FOOTBALL'. A YARD is a unit of measurement equal to 3 feet, or 0.9144 meters. It is commonly used in the United States and the United Kingdom to measure distances, such as in FOOTBALL fields. FOOTBALL is a sport played by two teams of 11 players on a rectangular field with goalposts at either end. The objective of the game is to score points by advancing the ball into the opposing team's end zone.