Complex sentence: An attempt to attack again was cancelled due to the mud, a heavy German barrage and lack of fresh troops; the 68th Brigade dug in on the west facing Contalmaison and the 14th Brigade dug in on the south side.
Split into simpler sentences: An attempt to attack again was cancelled due to the mud, a heavy German barrage and lack of fresh troops. The 68th Brigade dug in on the west facing Contalmaison and the 14th Brigade dug in on the south side.