Morning reports are are created each morning, as the name implies. Modern day morning reports are an "exception based" system, only containing information on those individuals who are not "Present and Accounted for." Among the reasons for being listed on a morning report are: promotion or demotion; being killed, wounded or missing in action; being assigned to a unit, or leaving a unit; and going to a hospital for treatment, or to another activity for training.
Fort Dalles (originally Fort Drum) was a supply depot for the U.S. Army on the Columbia River in Oregon, and headquarters for Army operations during the 1855-56 Yakima Indian Wars with eight companies assigned to the garrison. During the Civil War the regular army was removed, and volunteer troops from California, Oregon, and Washington took over the task of protecting frontier settlements.
From the description of Morning report of U.S. troops, stationed at Fort Dalles, O.T., 1858-1862 [electronic resource]. (Washington State Library, Office of Secretary of State). WorldCat record id: 166411585
