[4] For the next year, he commanded cavalry brigades in the Army of the Tennessee, being engaged in the battles of Meridian, Brice's Crossroads and Tupelo.

In October, 1864 he commanded the 4th Brigade in Alfred Pleasonton's cavalry division during Price's Missouri Raid.

A few days later he returned to the field in command of a brigade in James H. Wilson's cavalry corps and fought at the battles of Selma and Columbus.

[7][8][9] General Winslow himself later wrote on January 23, 1914, "I have always considered that engagement, by the number present and the results achieved, to be the final battle of the war".

[11][12] Winslow was also appointed inspector for the Government of the Union Pacific Railroad by president Ulysses S. Grant on its completion.