Whites in the military

So the AP had a story about an independent report for Congress saying that Military Leadership is too white and too male. According to the report, 77% of senior officers are white, 8% are black, 5% are Hispanic, and 16% are female. One of the reasons the percentage of females is low is their inability to serve in combat units. "The report ordered by Congress in 2009 calls for greater diversity in the military's leadership so it will better reflect the racial, ethnic, and gender mix in the Armed Forces and in American Society". Why don't we worry more about being an undefeatable force and handling the situations we find ourselves in so that we win the battle instead of worrying about what color or gender the Senior Officer Corps mainly is? Kinda crazy to me...