Complex sentence: In 1943 he became Brigadier General Staff for the 1st Army, becoming involved in the Battle of the Kasserine Pass in Tunisia, and in 1944 he took command of 44 Indian Armoured Division, a post he held until 1944.
Split into simpler sentences: In 1943 he became Brigadier General Staff for the 1st Army. In 1944 he took command of 44 Indian Armoured Division, a post he held until 1944.