Complex sentence: He also sent the 3rd Battalion of CT 26 to attack from southeast to northwest into the city's factory district along a front of about filled with buildings, with instructions to maintain contact with the 2nd Battalion.
Split into simpler sentences: He also sent the 3rd Battalion of CT 26 to attack from southeast to northwest into the city's factory district along a front of about filled with buildings. He instructed the 3rd Battalion to maintain contact with the 2nd Battalion.