Complex sentence: The Viet Minh and later People's Army of Vietnam (PAVN) used both the original Japanese versions and Communist Chinese copies until they were replaced in front-line use by the Soviet models in the mid- 1960s.
Split into simpler sentences: The Viet Minh and later People's Army of Vietnam (PAVN) used both the original Japanese versions and Communist Chinese copies. They were replaced in front-line use by the Soviet models in the mid- 1960s.