During the Chattanooga campaign, Bridges' Battery was attached to Thomas J. Wood's 3rd Division of Gordon Granger's IV Corps. After Wood's division captured Orchard Knob on 23 November 1863, General Thomas immediately ordered Bridges' Battery forward to occupy the seized hill. In the Battle of Missionary Ridge on 25 November, Ulysses S. Grant ordered Thomas to attack the Confederate rifle pits at the base of the ridge. Thomas relayed the order to Granger, who was totally absorbed in aiming the guns of Bridges' Battery. After Grant repeated the order, Granger came to his senses and instructed his division commanders Wood and Philip Sheridan to attack when a battery fired six shots in rapid succession. As noted on the historical marker at the Chickamauga and Chattanooga National Military Park, Bridges' Battery fired the six signal shots to begin the attack about 3:30 pm. The battery was armed with two 12-pounder Napoleons and four 3-inch Ordnance rifles. After the soldiers stepped off, the battery "continued a rapid and annoying fire over the heads of the assaulting line of Union troops till the ridge was carried". The marker states that the battery reported no casualties.