I'm not anti-Marine - quite the opposite in fact. But some of your points are just plain wrong.
Yes, but not the major campaigns - Guadalcanal, New Guinea, the Philippines, Okinawa.
Again, not exactly, and especially not true in New Guinea, Okinawa, and the Philippines.
No, that's demonstrably wrong. Even Belleau Wood, probably the most famous use of Marines in the war, only involved one brigade, and that brigade fought alongside the Army's 2nd Division. At it's HEIGHT in WW1, the USMC had a TOTAL strength of just under 75,000 - or, around what 3 Army Divisions of the time mustered.
Again, no. The Pusan Perimeter was initially defended by the US 8th Army, consisting of 24th and 25th Infantry Divisions and the 1st Cavalry Division, subsequently reinforced by 2nd Infantry Division, 5th RCT, a British Brigade, and the 1st Provisional Marine Brigade, and, near the end of the battle, the 27th British Commonwealth Brigade. The 1st PMB was built around the 5th Marines, a MAG, and some artillery - around 6000 Marines in all.
As for Inchon, yes, the assault troops were primarily Marines - mainly the 1st Marine Division. However, at no point did the USMC constitute the primary ground force in Korea, or even close to it.
True, but disingenuous, as you have to factor in the cost of the United States Navy, which transports the Marines and defends them en route.
There were plenty of islands taken by only Marine forces (Peleliu, Saipan, the Marshall islands, Iwo Jima, etc.)
and the Marines were the primary force (the tip of the spear so the speak) throughout the entire war, Army forces being used primarily in support and for consolidation/mopping up, because, as you said, there's just plain more of them.
The Marine Corps was also used as the primary battle force against the Germans in the First World War
and again in Korea (the defense of Pusan then the Inchon landings).
As for Inchon, yes, the assault troops were primarily Marines - mainly the 1st Marine Division. However, at no point did the USMC constitute the primary ground force in Korea, or even close to it.
Pound for pound though, it's no comparison. Who does much more with much less?
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