Because they're such versatile pieces of clothing (belt, shawl, scarf, mask, and like 8 types of hat) they're extremely common all over the middle east by different names. Basically any time you see an arab with some sort of cloth covering their head or neck it's going to be a keffiyeh (or shemagh, or ghutra (?), or whatever they're locally called).

Early zionist Jews that emmigrated to Palestine when it was under Ottoman and British control made an actual effort to integrate with the locals and started wearing keffiyahs too, so they still get used by Israelis even though they're not as popular as they were.

Sure the Germans committed genocide but the Soviets took a dead Nazi’s watch, so who can really say who the bad guy is?

I remember hearing someone say the additional watches were compasses or something similar for artillery, but its been too long for me to remember anything about where I heard it.

I so distinctly remember being told in highschool, about Soviets doctoring photos where red army soldiers had been wearing two watches

It wasn't just any photograph that was allegedly doctored. It was this one.