IMHO you gotta be careful using the Bonus March as an example of violation of Posse Commitatus.
The Federal District of Washington D.C. is just what it says, under federal control exclusively, and that’s where the Bonus Army camped out & set up their shantytown.
Douglas MacArthur surely overreacted using Renault tanks (p***ant little vehicles to any real tanker) to bulldoze the shanties of the poor desperate Bonus marchers. But notice how little this action affected the memory of the general who later said, “I shall return”.
What’s never ever mentioned in the accounts of the Bonus March is that they got exactly what they wanted: the WW1 vets’ bonus was paid ten years ahead of what the original legislation provided, in 1935 instead of 1945. FWIW my grandfather received his $600 bonus & used it to buy the house he had been renting, owned it free & clear by 1940.
Also, commemorating the Bonus Army is the stuff of Pete Seeger, Woody Guthrie, Peter Paul & Mary, and other lefty folkies. No offense, just having fun here because I’m old enough to remember all their shenanigans.
;^)
Were you there when we invented sex? ;o)