flow of WWII weapons after the war

Since starting wwiiafterwwii, I have wanted to do something on this topic but was unsure how to approach it. I am interested in how WWII weapons performed in battle against Cold War replacements. But also, it is fascinating to consider how they ended up where they did after WWII……how did a Garand built to fight Imperial Japan end up in the Somali desert in the 1970s, or how did a Waffen-SS sturmgewehr end up in 21st century Damascus?

(An ex-Wehrmacht NbW 42 Nebelwerfer with Interarms markings in the 1960s.)

M1917 rifle in 21st-century Greenland

The last active-duty military unit in the world still using the M1917 rifle is the Sirius Sled Patrol (Slædepatruljen Sirius) of the Danish possession of Greenland. The M1917 is designated Gevær M/53-17 by the Sirius Sled Patrol.