Term: bivouac (Civil War)
Definition: To sleep in the open, without a tent. The Civil War term defined by the U.S. Army in 1861: “When an army passes the night without shelter, except such as can be hastily made of plants, branches, etc., it is said to be in bivouac.”
[Source: http://www.citrus.k12.fl.us/staffdev/social%20studies/PDF/Slang%20of%20the%20American%20Civil%20War.pdf, Slang of the American Civil War. (Citrus County Schools, Florida)
http://www.civilwarhome.com/terms.htm Definition of Civil War Terms. (2007)]
