Complex sentence: The British lost 121 killed and 240 wounded, the French 306 killed (including Captains Laindet Lalonde and Moncousu) and 280 wounded.
Split into simpler sentences: The British lost 121 killed and 240 wounded. The French lost 306 killed, including Captains Laindet Lalonde and Moncousu, and 280 wounded.