This book covers the action of marine tankers and Ontos crewmen who fought the local Viet Cong, the Viet Cong Main Forces, and the North Vietnamese Regular Army from 1965 to 1970 in I Corps, South Vietnam. It opens with a brief backdrop of the history of Vietnam, the political atmosphere in South Vietnam, a short bio of the senior military leadership on both sides, and what led the US to the landing of marines on March 8, 1965. From that point, the chronology is based on previously classified documents, Marine Corps official documents, with interviews from and articles by marine veterans who detailed their fight. Maps, personal pictures, and charts supplement the narrative.