Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The 3rd Regiment Indiana Cavalry, also designated the 45th Regiment Indiana Infantry or the 45th Regiment Indiana Volunteers was a military unit from the U.S. state of that participated in the . It consisted of two separate "wings" that never operated together: The (or Right Wing), consisting of Companies A, B, C, D, E and F, organized at , August 22, 1861, that were intended for service with the . On October 22, the six companies were designated the 3rd Cavalry and assigned to the in the of the war. The East Wing saw action at the . The (or Left Wing), consisting of Companies G, H, I, K, L and M. The first four companies were organized at Madison on October 1, 1861. In December, they were assigned to the . Company L, organized in October 1862, and Company M, organized in December 1862, later joined the unit in . The West Wing saw action at the . In December 1864, the West Wing companies were transferred to the .