States Army, the land force that fought to preserve the collective Union of the states, was often referred to as the Union army, the federal army, or the...

The military uniforms of the Union Army in the American Civil War were widely varied and, due to limitations on supply of wool and other materials, based...

The Army of the Potomac was the primary field army of the Union army in the Eastern Theater of the American Civil War. It was created in July 1861 shortly...

S. Grant's command of all Union armies in 1864. Inflicting an ever-tightening naval blockade of Confederate ports, the Union marshaled resources and manpower...

The Army of the Tennessee was a Union army in the Western Theater of the American Civil War, named for the Tennessee River. A 2005 study of the army states...

The United States Army Corps of Engineers (USACE) is the military engineering branch of the United States Army. A direct reporting unit (DRU), it has three...

government of Missouri. The Union Army was a new formation comprising mostly state units, together with units from the regular U.S. Army. Keeping the southern...

brigade, consisting predominantly of Irish Americans, who served in the Union Army in the American Civil War. The designation of the first regiment in the...

The Army of the Shenandoah was a field army of the Union Army active during the American Civil War. First organized as the Department of the Shenandoah...

for Union Army wounded is 275,174. The main Confederate armies, the Army of Northern Virginia under General Robert E. Lee and the remnants of the Army of...