The Army of Virginia commanded by John Pope was a newly created force (totally independent from McClellan's Army of the Potomac), consisting of disparate units from General Fremont's Mountain Department, McDowell's Department of the Rappahannock, Bank's Department of the Shenandoah, and Sturgis' brigade from the Military District of Washington. The Army lasted only from June through September 1862 when it was disbanded after being defeated at Second Manassas.