Department of the Pacific had six subordinate military districts during the Civil War: On July 27, 1865 the Military Division of the Pacific was created under Major General Henry W. Halleck, replacing the Department of the Pacific, consisting of the Department of the Columbia that now consisted of the state of Oregon and the territories of Washington and Idaho and the expanded Department of California that now consisted of the states of California and Nevada and the Territory of New Mexico and Territory of Arizona. On 30 May 1898, Gen. Wesley Merritt established in San Francisco the Headquarters, US Expeditionary Forces and Department of
California Pacific Railroad was severe flooding in the Sutter Bypass causing damage to the line between Knight's Landing and Yuba City. That portion of the line was abandoned and track removal commenced on May 14, 1877. The line from Davis to Woodland was later operated by the Southern Pacific and currently by the California Northern Railroad. California Pacific Railroad The California Pacific Railroad Company was incorporated in 1865 at San Francisco, California as the California Pacific "Rail Road" Company. It was renamed the California Pacific Railroad "Extension" Company in the spring of 1869, then renamed the California Pacific Railroad later that same year.