in May and became the commanding full colonel on June 17, 1862. Staying in the Trans-Mississippi Department the 22nd was transferred to Arkansas, where it was grouped into the 1st Brigade of Walker's Greyhounds, a division made up solely of units from Texas under command of Maj. Gen. John George Walker. Hubbard fought in the Battle of Young's Point. After serving on a military court, Hubbard returned to his regiment in time to participate in the Red River Campaign. Afterwards, he fought at Jenkin's Ferry. In February 1865, back in Texas, Hubbard was appointed commander of the 1st Brigade. He was finally paroled on July 12, 1865.