Complex sentence: He ordered the artillery battery to set up on the knoll, and the 1st Battalion to attack Baby 700 and Mortar Ridge from the north-east, at the same time as the 2nd Battalion would circle around and attack Baby 700 from the west.
Split into simpler sentences: He ordered the artillery battery to set up on the knoll. Then directed the 1st Battalion to attack Baby 700 and Mortar Ridge from the north-east, at the same time as the 2nd Battalion would circle around and attack Baby 700 from the west.