Complex sentence: Gullet, pp.266--269 The attack on the main Gaza position was supposed to have been by the 53rd (Welsh) Division, however by 13:00 they had still not began the assault and the ANZAC Division was ordered to prepare a dismounted assault on the town.
Split into simpler sentences: Gullet, pp.266--269 The assault on the main Gaza position was supposed to have been by the 53rd (Welsh) Division, however by 13:00 they had not began their attack. So the ANZAC Division was ordered to prepare for a dismounted assault on the town.