M1911 .45 cal
Guerrilla warfare was largely used by the Viet Cong and not by the US Combatants in Vietnam. To answer your question, no.
M-16
Napalm?
The U.S used no nuclear weapons whatsoever on Vietnam.
Roscoe is a commonly used slang term for a handgun.
The former Soviet Union expended funds on military hardware with or without Vietnam. The ONLY difference was; the Vietnam ordnance was USED (consumed); after the Vietnam War, the Soviet ordnance (that was never used) had to be destroyed...as they were in the US.
The first US draft was during the US Civil War (1861-1865); the last US draft was during the Vietnam War (1961-1975).
First, US Civil War; Last, Vietnam War.
Like the US, the last time was the Vietnam War.
The US never invaded Vietnam.
In the US, in 2012, there were 12765 homicides. 8855 used firearms. Of those, 6371 were handguns. Specific type of handgun not reported.
South Vietnam was considered an ally of the US.