Where is the empirical evidence behind General Casey's assertion that "the strength of our Army comes from our diversity"? Is the diverse army of today really superior to Lee's Army of Northern Virginia that resisted the Union's mighty Army of the Potomac for four years? Is it superior to the U.S. Army that went ashore at Normandy? How so? Where is the evidence that an army enhances its strength when its enlisted ranks and officer corps become a mosaic of white, black, Asian, Hispanic, male, female, straight, and gay soldiers?
No one would say a surgical team or hockey team or debating team was superior because it included people of all races and ethnic groups. We would judge each team by its performance. What General Casey seems to be saying is that the strength of the U.S. Army stems from the fact that we now have a smaller share of white male soldiers. Does anyone really believe that?