Mikhail Timofeevich Kalashnikov began designing an assault rifle while hospitalized
after being wounded in the Battle of Bryansk. He entered his design into a competition,
launched by the Red Army, to find a weapon that could use 7.62 x 39mm cartridges
and no jam under the adverse conditions of the Soviet frontline. It was no immediately
taken up by the Red Army, but in 1949, the Soviet Union adopted on e of the
models dating to 1947.