The term pre-war or prewar (antebellum) is usually applied to the most recent or significant war in a culture's history.
In the United States of America, Antebellum is most often used to denote the period before the American Civil War  while pre-war typically refers to the period before World War II.
In real estate the term refers to buildings from the (late) 1930s in the Functionalist or Art Deco styles.
||Look up pre-war in Wiktionary, the free dictionary.
- ^ http://www.merriam-webster.com/dictionary/antebellum