It's really not an opinion based answer. There is no answer which does not rely on some kind of foundation. The question and my answer are objective, but you're refusing to accept the definition that I use while failing to provide a reasonable alternative.

"it is reasonable to say that the U.S. military is a very large source of terrorism." This is crazy person opinion based talk, you aren't even talking about secret funding you are just stuffing all casualties into your new definition of terrorism. But you stop at ww2, maybe you think Germans and Japanese 80 years ago were all some magical nonhuman monsters that shouldn't be afforded the same amount of outrage when they were bombed by Americans