22oz of beef per day seems crazy high for peacetime cattle ranch owners, let alone deployed infantry. (I’d love it, but that’s 5.5 quarter pounders per day, which seems really high for wartime rations. If the US pulled that off, that had to be a massive [relative] advantage in troop energy and morale.)
Here you go[1]. That source gives 20oz for the 19th century rations and a lower number for WW1 "reserve rations." I can't find a source for my 22oz WW1 claim, but as you can see from what I did find, it's well within the realm of plausibility. And yes, the doughboys were doughty lads to be sure.
