Andika mwendelezo wa fungu hili - Marsh alijiunga na Jeshi la Muungano kutoka Randolph, New York, Agosti 1861. Alipigana katika Vita vya Fair Oaks
(aka Seven Pines), Gettysburg, na Spotsylvania, na alijeruhiwa kila wakati. Alitoka jeshini mnamo Septemba 1864.