J.R.R. Tolkien: World War I British second lieutenant

“It seems now often forgotten that to be caught by youth in 1914 was no less hideous an experience than to be involved in 1939 and the following years. By 1918 all but one of my close friends were dead.”
--J.R.R. Tolkien, introduction to the second edition of The Lord of the Rings

“The Dead Marshes and the approaches to the Morannon owe something to Northern France after the Battle of the Somme.”
--J.R.R. Tolkien

“Hurrying forward again, Sam tripped, catching his foot in some old root or tussock. He fell and came heavily on his hands, which sank deep into sticky ooze, so that his face was brought close to the surface of the dark mere. There was a faint hiss, a noisome smell went up, the lights flickered and danced and swirled. For a moment the water below him looked like some window, glazed with grimy glass, through which he was peering. Wrenching his hands out of the bog, he sprang back with a cry. 'There are dead things, dead faces in the water,' he said with horror.

“'Dead faces!' Gollum laughed. 'The Dead Marshes, yes, yes: that is their name,' he cackled.”
--J.R.R. Tolkien, The Lord of the Rings