hardtack (HAHRD-tak) - n., a large, hard biscuit or cracker made from unleavened flour and water, formerly used as a long-term staple food, for example aboard ships.

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Used not only aboard ships (often called ship's biscuit) but as military rations, and still used today in Alaska and Hawaii as a staple with a long shelf-life. Roman legionnaires ate bucellatum, which was basically the same thing only using different grained. What we'd recognize as wheat-flour hardtack is at least as old as the Crusades. This particular name interestingly doesn't show up until around 1830 (which is why you won't see it in Napoleonic sea-tales (unless the author's being sloppy)), naming tack, in the nautical/military slang sense of food generally, that is hard.
---L.
Thanks, WikiMedia!
Used not only aboard ships (often called ship's biscuit) but as military rations, and still used today in Alaska and Hawaii as a staple with a long shelf-life. Roman legionnaires ate bucellatum, which was basically the same thing only using different grained. What we'd recognize as wheat-flour hardtack is at least as old as the Crusades. This particular name interestingly doesn't show up until around 1830 (which is why you won't see it in Napoleonic sea-tales (unless the author's being sloppy)), naming tack, in the nautical/military slang sense of food generally, that is hard.
---L.