 Complete the following phrase:  Strecker led his division in the invasion of Ukraine, participating in the Battle of Kiev and the First Battle of Kharkov. He earned another recommendation to command a corps. In January 1942 he was diagnosed with heart arrhythmia and sent on convalescent leave for three months. He returned to active duty in April, taking temporary command of the 17th Army Corps in Army Group Centre and receiving a promotion to General of the Infantry. He commanded the corps in the 