Stonewall Jackson was a famous napper:
Jackson, a general cut from the same cloth as Napoleon, could nap in any place—by fences, under trees, on porches–even in the stress of war. He liked longer naps but also had the reputation for taking quick, 5 minute siestas to rest his eyes. A couple of anecdotes of the General’s napping habits from A Thesaurus of Anecdotes of and Incidents in the Life of Lieut-General Thomas Jonathan Jackson by Elihu Rile . . .
More here at the Art of Manliness.