Major General James Mukoyama, was an Infantry Captain in the Vietnam War under David Hackworth, author of "About Face". He described how despite collateral damage, difficulty discernment of the enemy, and atrocities done by some soldiers on an "understandable" to a disgraceful scale, American soldiers as a whole hold each other accountable to high moral standards as a whole. These priorities are in contrast to the ferocious, merciless, ruthless, respected and feared reputation Republic of Korea Marines had among Americans, North Vietnamese and Viet Cong in the Vietnam War.
Jocko Willink then reads accounts from an American warfighter in the Vietnam War describing what he knew of the South Korean ROK Marines fighting there.
From Jocko Podcast 124 and 143

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