Complex sentence: On the night of 23/24 April 1945, Krukenberg received a call from Army Group Vistula headquarters and was summoned to bring the remains of his division and come help with the defence of Berlin.
Split into simpler sentences: On the night of 23/24 April 1945, Krukenberg received a call from Army Group Vistula headquarters. He was summoned to bring the remains of his division to help with the defence of Berlin.