Complex sentence: The regiment received orders to move to Baggush and build fortifications, completing the move on 1 September; the following day, it began constructing defenses at Maaten Baggush.
Split into simpler sentences: The regiment received orders to move to Baggush and build fortifications, completing the move on 1 September. The next day, the regiment began constructing defenses at Maaten Baggush.