sentences:  Upon the outbreak of the American Civil War, Sturgis joined the twenty-second regiment of the New York State Militia.When he turned 18 in 1864, Sturgis enlisted in the Sixtieth Massachusetts Regiment, commissioned as a first lieutenant and adjutant of the Sixtieth regiment.Sturgis served as post-adjutant of a prisoner-of-war camp near Camp Morton in Indiana in the summer and fall of 1864.