Very interesting
🇺🇲we still use the M-1 Garand and the Glock 911
But only for marching and training. 🇺🇲 still uses some old weapons from the past

While meanwhile using the sten when the k98 wa sthe primary weapon, the uzi we using till this day(in modern versions), and the Galil we used in the armor battalion in the 60s-70s

In 🇮🇱 we used k98 in the first years, then we switched to the FN FAL(used in the yom kippur and six day war), then there was the M16, then the M4, and then the TAR-21.

I know

The us military use M1 garands in ww2
After the war 🇺🇲we took different German guns and Japanese guns and now there in museums