Are you encamped a million miles from nowhere and need a photo frame? Use hardtack for that natural look! Will keep your picture protected in a shatterproof (very shatterproof) frame. Your decorating flair will be the envy of the camp! And if the supply trains get captured by Stonewall Jackson and you are reduced to half-rations, simply eat the frame. It never spoils!
Fun fact about hardtack — These hard crackers (also called tooth-breakers) really do last a long time. At the end of the Civil War, all the hardtack that had not been used was put into storage — then issued as rations during the Spanish-American War, 33 years later. Mmm-good.