Nice portion on about the USMC Raiders...including the grafting of
different sectors of Americans into one fighting unit.
(from the story of Bill Lansford, of Boyle Heights in Los Angeles).
IIRC, I saw a WWII-era movie about the raiders.
When potential raiders were being interviewed, the reviewer asked
one Marine why he wanted to volunteer for Raider duty.
“To KILL JAPS, SIR!!!!!”
Probably true, but you probably couldn’t have that in a re-make today!
"Gung Ho: The Story of Carlson's Makin Island Raiders" (1943) starring Randolf Scott, et al.