Complex sentence: Perrin, p.17 At the Battle of Nagashino in 1575,3,000 gunners helped win the battle, firing by volleys of 1,000 at a time, and concealed across a river and breastwork to effectively stop enemy infantry and cavalry charges while being protected.
Split into simpler sentences: Perrin, p.17 At the Battle of Nagashino in 1575,3,000 gunners helped win the battle, firing by volleys of a thousand at a time. They were concealed across a river and used breastwork to effectively stop enemy infantry and cavalry charges while being protected.