Australian Soldiers Used to Write Letters Home on Crackers

(via Atlas Obscura)  Sailors and soldiers throughout history have relied on hardtack. These dry, compact crackers could survive long voyages and military campaigns without molding or disintegrating. Hardtack was such a feature of the Australian and New Zealand Army Corps (ANZAC ) diet that it earned the nickname ANZAC tile (or wafer.) But they didn’t just eat it: Some Australian soldiers wrote messages on the wafers and mailed them home.