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 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 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...

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...

Army or U.S. Volunteers) effectively appointed, nominated, confirmed and commissioned (by signed and sealed document) who served in the Union Army during...

of Union Army generals, a list of Union brevet generals, a list of Confederate Army generals and a list of prominent acting Confederate States Army generals...

Union Army were called Cavalry Corps during the American Civil War. One served with the Army of the Potomac; the other served in the various armies of...

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...

The VI Corps (Sixth Army Corps) was a corps of the Union Army during the American Civil War. The corps was organized as the Sixth Provisional Corps on...

departments he appointed. Most of the major Union wartime commanders had, however, previous regular army experience. A smaller number of military leaders...

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...

The Grand Army of the Republic (GAR) was a fraternal organization composed of veterans of the Union Army (United States Army), Union Navy (U.S. Navy),...

Two corps of the Union Army were called XX Corps during the American Civil War. Though both served in the Union Army of the Cumberland, they were distinct...

The Union Army Balloon Corps was a branch of the Union Army during the American Civil War, established by presidential appointee Thaddeus S. C. Lowe....

Tennessee River. Two Union armies combined to defeat the Confederate Army of Mississippi. Major General Ulysses S. Grant was the Union commander, while General...

The V Corps (Fifth Corps) was a unit of the Union Army of the Potomac during the American Civil War. The first unit designated as the V corps was organized...

corps-sized units in the Union Army during the American Civil War. Separate formation called the I Corps served in the Army of the Ohio/Army of the Cumberland...

in July 1946. By September 1946, the army decreased from 5 million soldiers to 2.7 million in the Soviet Union and from 2 million to 1.5 million in Europe...

IX Corps (Ninth Army Corps) was a corps of the Union Army during the American Civil War that distinguished itself in combat in multiple theaters: the...

or First Hatcher's Run), fought on October 27–28, 1864, followed the Union Army's successful Battle of Peebles's Farm in the siege of Petersburg during...

VIII Corps was a corps of the Union Army during the American Civil War. The corps was initially created out of various Union commands as part of the Middle...

The Army Rugby Union (ARU) is the governing body for rugby union in the British Army and a constituent body of the Rugby Football Union (RFU). The ARU...

Confederate General Robert E. Lee's Army of Northern Virginia and Union Major General George B. McClellan's Army of the Potomac near Sharpsburg, Maryland...

XXV Corps was a corps of the Union Army during the American Civil War. It was unique in that it was made up almost entirely of African-American troops...

Northern Virginia. It was most often arrayed against the Union Army of the Potomac. The name Army of Northern Virginia referred to its primary area of operation...

ad hoc missions that the European Union (EU) has undertaken and has been described by some as a new "standing army" for Europe. The troops and equipment...