Complex sentence: At 7:00 a.m., on 3 March, the Imperialist scouts became aware of the enemy presence at Lauffenberg, before they were able to fully deploy the Bernhardines fired a musket salvo at half range accompanied by cannon fire.
Split into simpler sentences: At 7:00 a.m. on 3 March, the Imperialist scouts became aware of the enemy presence at Lauffenberg. Before they were able to fully deploy the Bernhardines fired a musket salvo at half range accompanied by cannon fire.