5 Marines of Company K, 3rd Battalion, 5th Marine Regiment describe the ferocious battle for Peleliu, an "island on fire." 9,000 Marines attacked 10,000 battle hardened Japanese soldiers dug into hundreds of fortified and reinforced coral and limestone caves. The tale of Peleliu is as harrowing as any in the history of modern warfare. A battle of total annihilation fought in inhuman conditions.
My father was one of the Marines there. He still remembered it with horror all the way to the end.
"“Believe nothing merely because you have been told it. Do not believe what your teacher tells you merely out of respect for the teacher. But whatsoever, after due examination and analysis, you find to be kind, conducive to the good, the benefit, the welfare of all beings - that doctrine believe and cling to, and take it as your guide.” ~ Gautama Siddhartha — The Buddha
Any sufficiently advanced evil is indistinguishable from stupidity. ~ Unk (Paraphrase of Clarke's 3rd Law: "Any sufficiently advanced technology is indistinguishable from magic.")
To get a much better feel for what it was like, see Tom Hanks "The Pacific" miniseries which covers a number of island invasions by marines of WW2. It may include this island. Hanks' politics aside, it seems a very good production.