"Peacekeepers at War" is the most complete treatise ever written on the military involvement of the United States in a potentially hostile Lebanon, circa 1982-1984. Colonel Tim Geraghty, the superb Commander of the 24th Marine Amphibious Unit at Beirut International Airport on October 23, 1983, when terrorists brutally murdered 241 of his men, provides a primer for those who contemplate sending our military forces on potentially hostile peacekeeping missions."