Complex sentence: Hunter's force advanced towards the town in a semi-circle formation, composed by the four battalions arranged from left to right in the following order: the 10th Sudanese, 9th Sudanese, the reduced 3rd Egyptian, and the 11th Sudanese.
Split into simpler sentences: Hunter's force advanced towards the town in a semi-circle formation, composed by the four battalions. From left to right, the 10th Sudanese, the 9th Sudanese, the 3rd Egyptian, and the 11th Sudanese.