Original sentence: After the war Petrov completed the Frunze Military accademy and was promoted to Major General in 1961.Petrov joined the army in 1939 and completed the leutenants course in 1941
Edited sentence: After the war Petrov completed the Frunze Military academy and was promoted to Major General in 1961.Petrov joined the army in 1939 and completed the lieutenants course in 1941