The colonial wars and the American Revolution / David H. Overy and Kevin M. Gannon -- Napoleonic warfare / Owen Connelly -- The wars of 1812 and 1846 : the leadership factor / J. David Valaik -- The American Civil War, 1861-1865 / William Garrett Piston -- Indian wars of the trans-Mississippi West, 1850s-1890s / Jerome A. Greene -- The military role of the United States in World War I / David R. Woodward -- The United States, World War II, and the Grand Alliance / Colin F. Baxter -- The Second World War : the war against Japan / H.P. Willmott -- The Korean conflict and the Cold War / Pierce C. Mullen -- America in Vietnam / John M. Carroll -- Proliferation : the United States and the nuclear arms race / Walter L. Hixson -- Counterterrorism and the U.S. military after 9/11 / Christopher C. Harmon.