I’m certain we were eating Korean War vintage C-Rats in MCRD San Diego in 1981. Other than tasting like crap there were no ill effects.
The pound cake was something you could use for a wheel chock. But it was probably that way in 54.
We had it good, brother... In the Second Mexican-American war... They served the last of the Civil War hardtack. 1865 era to 1914. Stored in wooden barrels.
Always the grunt that gets the crap. And eventually leads the way on food preservation. Napoleon put a 10,000 franc bounty out on food preservation that led to Pasteur bottling peas in champagne bottles. For soldiers and sailors.
/johnny