A great piece written by Mark Twain and made into a video by Marcos productions.
Twain apparently dictated it around 1904-05; it was rejected by his publisher, and was found after his death among his unpublished manuscripts. It was first published in 1923 in Albert Bigelow Paine's anthology, Europe and Elsewhere.
The story is in response to a particular war, namely the Philippine-American War of 1899-1902, which Twain opposed. See Jim Zwick's page "Mark Twain on the Philippines" for more of Twain's writings on the subject.
The War Prayer
By Mark Twain
It was a time of great and exalting excitement. The country was up in arms, the war was on, in every breast burned the holy fire of patriotism; the drums were beating, the bands playing, the toy pistols popping, the bunched firecrackers hissing and spluttering; on every hand and far down the receding and fading spread