Complex sentence: The 11th Armoured Division, known as The Black Bull, was an armoured formation of the British Army which was raised in 1941 during World War II. The 11th Armoured Division was formed in response to the unanticipated success of German panzer divisions.
Split into simpler sentences: The 11th Armoured Division, known as The Black Bull, was an armoured formation of the British Army which was raised in 1941 during the Second World War. The Division was formed in response to the unanticipated success of German panzer divisions.