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South Vietnam was, "on maps", divided by the US Military into FOUR sections: Military Region I (MR-1), Military Region II (MR-2), Military Region III (MR-3), and Military Region IV (MR-4). They were also referred to as I Corps, II Corps, III Corps, and IV Corps. I Corps was located just south of the DMZ (at the 17th Parallel). Next came the Central Highlands, II Corps. Saigon, the capital was located in III Corps. The bottom of the country, just below Saigon, was IV Corps.

The term "Hot" in Vietnam meant "violent or deadly" NOT the weather! The weather was (almost) always hot in Vietnam anyway, so there was no reason to say it was hot, when everyone already knew that! So, "HOT" meant "Dangerous, deadly, lots of NVA/VC, violence, etc."

With that in mind; I Corps was very hot, and NVA country. II Corps, the Central Highlands could get rough, and was a mixture of NVA and VC. Saigon, the capital, in III Corps was surrounded by more US Army Divisions than any other military region. Most US Army combat divisions were around the capital, III Corps was VC country. The Mekong Delta region, was Viet Cong (VC) country, and IV Corps.

GI's living in I Corps, or the Highlands (II Corps) experienced near United States weather. VERY much like California. III Corps and IV Corps was EXTREMELY HUMID and similar to the US state of Louisiana or Florida.

GI's stationed in the Louisiana/Florida weather conditions wore their uniforms as shown in the movie, "PLATOON", starring Charles Sheen, etc. That unit (the 25th Infantry Division) was in III or IV Corps. The movie, "Hamburger Hill" was II Corps, the Highlands. The cooler the weather, the more the men wore their uniforms according to regulations. The more humid the weather, the more they shed their uniforms, fighting in only their trousers.

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13y ago

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