I really don’t think your chart is the reason. There are plenty of very intelligent Blacks in the military. They are not looking at the military as a career but as a stepping stone. Combat arms is not their first choice. They are going to communication, logistics etc. These fields provide greater opportunity than being a cannon cocker etc.
My point was regarding your comment that blacks should be 10% of senior officers. While there are a lot of very smart blacks, like Clarence Thomas, Allen West, Thomas Sowell, etc,there aren’t enough to provide you with the numbers you want.