 Complete the following phrase:  In December 1918, Stalin was sent to Perm to lead an inquiry into how Alexander Kolchaks White forces had been able to decimate Red troops based there. He returned to Moscow between January and March 1919, before being assigned to the Western Front at Petrograd. When the Red Third Regiment defected, he ordered the public execution of captured defectors. In September he was returned to the Southern Front. During the war, he proved his worth to the Central Committee, displaying decisiveness, determination, and willingness to take on responsibility in conflict situations. At the same time, he disregarded orders and repeatedly threatened to resign when affronted. He was reprimanded by Lenin at the 