Complex sentence: The rifle was used in the Battle of Isandlwana, and by the company of the 2nd Battalion, 24th Regiment of Foot at the battle of Rorke's Drift, where 139 British soldiers successfully defended themselves against several thousand Zulus.
Split into simpler sentences: The rifle was used by the company of the 2nd Battalion, 24th Regiment of Foot present at Rorke's Drift. During the battle, 139 British soldiers successfully defended themselves against several thousand Zulus.