Chinese Civil War ( 1948 ) Movie: The Assembly -- Lots of Milsurp Guns & Gear.
The Hong Kong/PRC produced movie was released in 2008. Many scenes includes weapons and equipment from most of the major arms producing nations of the mid-20th Century: US , USSR , the UK & Commonwealth , Czechoslovakia , etc. Looks like the movies includes action scenes from both the Chinese Civil War and the PLA intervention during the Korean War.
Trailer with sub-titles:
http://www.youtube.com/watch?v=sLI9JO766A8
Action scene ( Not for kid's eyes).
http://www.youtube.com/watch?v=qmIpofVmhhc
Quite a mix of guns and gear on both sides.