Complex sentence: Chaytor, commanding the New Zealand Mounted Rifles Brigade, moved his headquarters up to the boundary post south-east of Rafa, immediately behind the Auckland Mounted Rifle Regiment, and half an hour later the attack was seen to be steadily progressing all along the line.
Split into simpler sentences: Chaytor, commanding the New Zealand Mounted Rifles Brigade, moved his headquarters up to the boundary post southeast of Rafa, immediately behind the Auckland Mounted Rifle Regiment. Half an hour later, the attack was seen to be steadily progressing all along the line.