Assigned to the Mississippi Squadron as a tug and recon vesselEdit
Thistle deployed with the Mississippi Squadron as a tug and reconnaissance vessel in October 1862 and participated in the capture of Fort Hindman, Arkansas Port, Arkansas, on 11 January 1863.
From 14 to 27 March, she took part in an expedition in the Steele's Bayou Expedition in Mississippi, attempting to find an entrance into the Yazoo River, Mississippi, and a rear approach to the Confederate stronghold at Vicksburg, Mississippi.
After the expedition failed, Thistle rejoined the squadron in the Mississippi River. There, she performed dispatch and reconnaissance duty for the remainder of the war.