Player 1 attacks. Player 2 defends. A is the total value of all of Player 1's attacking Units' offense ratings. B is the total value of all of Player 2's defensive ratings. Players' losses are calculated according to these aggregate values. If: А = 15,000 Offense and B = 20,000 Defense, then Player 1 loses approximately 55% of Units. Player 2 loses 45% of Forces. These ratios may be subject to change.