The Quartermaster Stable was used to house wagon teams that traveled the 55 miles from Fort Spokane to the Northern Pacific Railroad depot at Sprague. Although the teamsters were usually civilians, a contingent of military personnel accompanied the wagon convoys to ensure their safety.
In addition to housing the wagon mules, the quartermaster's jurisdiction also included other wheeled vehicles including 13 army wagons, 4 escort wagons, a spring wagon, 3 trucks and 6 carts. Overall, the stable could house 58 mules and store 100 tons of hay in the loft.
Communication between Fort Spokane and the outside world was limited but the fort was not completely secluded. In addition to regular tri-weekly stagecoach services connecting Spokane to Fort Spokane by the mid-1880s, the post also hosted a telegraph and eventually a telephone by the early 1890s. When the lines were unreliable, as they frequently were, older means of communication, such as carrier pigeons, were used.