Trad:
I "went there" because based on the neighborhood, almost certainly that 19 year old Marine was black.
because that's how the war was known, during the later years of the war.
and because
By the following year, Black soldiers made up
16.3% of those drafted and 23% of Vietnam combat troops, despite accounting for only roughly 11% of the civilian population. These new draftees often had little understanding of the war's purpose and were increasingly disenchanted by their role in it. Jun 12, 2020
https://time.com
Failure to label a pot a pot, does not change what it is. Failing to recognize what is was, does a dis-service to our history and is an injustice to those blacks who made up that 23% of combat troops.
Black Vietnam Veterans on Injustices They Faced: Da 5 Bloods