John K. Robertson, Ph.D., is a Colonel (Ret.), U.S. Army Corps of Engineers with 23 years of service and served on the faculty at West Point. The lecture is based on his new book “Revolutionary War Defenses in Rhode Island.” The book was a 10-year research effort and contains almost 300 maps and plans showing defensive fortifications along most of the coast of Narragansett Bay and southern Rhode Island. Many of the maps are of fortifications on Aquidneck Island, which was occupied during the Revolutionary War at various times by the Americans, British, and French.