You have captured it: the uncertainty and the bedlam of life in combat. The historical bits of the old K-rations were the perfect setup for the time frame of the vignettes.
I saw none o fthe usual suspects in writing: syntax, grammar, spelling/punctuation. I particularly liked your clever use of the WritingML trick for the foreign langauge dialogue! That is something I will definitely consider incorporating in my own writings, thank you!
The stories came over as snapshots of life on the edge; there are readers who have been there and seen with their own eyes what it's like, and you have framed it well with your own.
Thank you for the grand effort: please accept some coin of the realm!