Complex sentence: The Jagers retired, while the concealed British sprang on each flank, Lieutenant Colonel Yorke on the left, and Lieutenant Colonel Dundas on the right, with Dundas were the Forty-third, Seventy-sixth, and Eightieth Regiments.
Split into simpler sentences: The Jagers retired, while the concealed British sprang on each flank, Lieutenant Colonel Yorke on the left, and Lieutenant Colonel Dundas on the right. With Dundas were the Forty-third, Seventy-sixth, and Eightieth Regiments.