Complex sentence: The Division was formed three times, being initially established at Vyazma in September 1939, operating as part of the 9th Army on 22 June 1941, then, after the Second Battle of Kharkov, being wiped out at Izyum in May 1942.
Split into simpler sentences: The Division was formed three times, being initially established at Vyazma in September 1939. Operating as part of the 9th Army on 22 June 1941, then, after the Second Battle of Kharkov, being wiped out at Izyum in May 1942.