US Military Uniform Coat Fork Union Academy Identified 1940’s ? Marines For Sale

A vintage military coat that I was told was World War II ROTC from the widow I bought it from In Florida. It’s identified on the inside with archer HJ the number 516 the name Moon and Mormon number 870 some slight moth damage in a couple of places satisfaction is fully guaranteed. I’m sorry I’m not an expert in what war this was used in, but I believe it’s World War II according to the widow. I’ve been informed that it’s Fork River Academy