Complex sentence: The M3A1 was also supplied via lend-lease channels to the Soviet Union (3,034; these vehicles remained in service until at least 1947) and Britain, and used to equip Free French Forces, Belgian, Czechoslovak and Polish units.
Split into simpler sentences: The M3A1 was also supplied via lend-lease channels to the Soviet Union (3,034; these vehicles remained in service until at least 1947) and the Britain. They were also used to equip Free French Forces, as well as Belgian, Czechoslovak and Polish units.