This also isn't an exact comparison, but think about veterans groups in other countries. There's the "Marine Corps League" in the U.S. which is an association for veterans. These are not "fascists" and they don't go out and bust heads, they just go on hikes and raise money for wounded vetarans, but it was basically guys like that who were in the Blackshirts.
The Blackshirts modeled their style after commando units (and many of them served in those units). You did sort of see this in a LARP version in the U.S. with the Proud Boys who'd wear black shirts and tactical milsurp, although some of them could be military veterans, and some of those guys thought of themselves as fascists in some kind of way. But, the Blackshirts were way better organized and disciplined and military. Nowadays, I think the most likely places you'd see something like that are in Ukraine and Russia.