USMA 22 grad was a black belt in TKD and coached by the 10 year olympic coach. won two state titles -- first was hard but second not so much. missed going to Nationals because -- ironically -- during SLE. I would strongly urge you to do TKD for two reasons. First, it is the discipline of seeming to do countless hours of repetitive tasks is good preparation for Drill. Second, I can 100% assure you that the Grappling and Boxing at USMA will be far easier. The footwork in TKD for boxing was extremely useful (and knowing how to get hit in the face and not freeze). The grappling is self explanatory. Best of luck.