Complex sentence: The latter invaded Tunisia and defeated Husayn the battle of Smindja (4 September 1735), the latter forced to flee to Sousse, while his troops in Tunis capitulated.
Split into simpler sentences: The latter invaded Tunisia and defeated Husayn at the battle of Smindja on 4 September 1735. Husayn was forced to flee to Sousse, while his troops in Tunis capitulated.