Complex sentence: After returning home in 1772, he took part in light infantry training, coming to the attention of General Howe, and developed the Ferguson rifle, a breech-loading flintlock weapon based on Chaumette's earlier system.
Split into simpler sentences: After returning home in 1772, he took part in light infantry training, coming to the attention of General Howe. During this time, he developed the Ferguson rifle, a breech-loading flintlock weapon based on Chaumette's earlier system.