Here are three "short snorters" my dad brought back from WW2. Fellow soldiers (in his case, usually crew members from his B-17 on which he served as a navigator) would sign on some banknotes, with the idea that the person with the fewest names on his snorter would have to stand for a round of drinks at some reunion. Sadly, many of his colleagues didn't survive to make the date.

The notes are a Pound note from England, a note from free Morocco, and a 5 Ruble note from the USSR. My dad served with the 15th Air Force based in Italy. Many of their missions involved hitting targets in eastern Europe, most notably the Ploesti oilfields in Romania. They would fly from southern Italy, then land and rearm in the USSR, then hit their targets on the return.