Hard Tack 001 (U.S. Civil War) Hard Tack 001 is a historical reproduction of a staple food used during the U.S. Civil War era. Known commonly as "hardtack" or "crackers," this food item was issued to soldiers for sustenance due to its long shelf life and easy transportation. Made from flour, water, and salt, hardtack is characterized by its hard texture and long preservation period. The packaging labeled '001' suggests a first edition or replica of the original hardtack produced during the Civil War period, offering a unique connection to history for collectors and reenactors.