Want this question answered?
Yes, Republic of South Korean Servicemen fighting in Vietnam were referred to as ROK's...the ROK Army (Republic of South Korea).
Not all of the ROKs (Republic of South Korea) were soldiers, some may have been ROK Marines. ROK deployed approximately 150,000 fighting men to RVN (Republic of South Vietnam) during the war.
No.
North Vietnam vs US/Australia/NZ/PI/Thailand/ROK/RVN
The allies: US/Australia/New Zealand/Philippines/ROK/RVN/Thailand
North Vietnam (supplied by USSR/Chinese Communists) verses South Vietnam, US, Australia, New Zealand, Thailand, Philippines, and South Korea (ROK).
Vietnam and Cambodia
Great Britain did not send troops to Vietnam during the war.
The US asked them to.
The US Civil War (1861-1865) & the Vietnam War (1961-1975).
US, Australia, New Zealand, Philippines, Thailand, South Korea (ROK), all helped.
NVA/VC vs US, AUS, NZ, ROK, RVN, PI, Thai.