but clearly we weren’t comparable to the fucking Nazis
Actually, the US actions in SE Asia is very comparable to what Germany and it’s allies did in eastern Europe and Russia… not even the Nazis attempted to use chemical warfare to starve their victim population into submission - the US did.
What the Nazis did was nothing unique - it has been standard fare for colonialist powers long before WW2 happened, and it was stadard fare for the US both before and during the (so-called) “Cold War.” The only reason the Nazis became infamous for it was because they literally perpetrated it on the (so-called) “civilized” world’s doorstep on people that looked “white.”
You still didn’t answer what it meant to break the US military.
TLDR - “Our Army that now remains in Vietnam is in a state approaching collapse, with individual units avoiding or having refused combat, murdering their officers, drug-ridden, and dispirited where not near-mutinous.”