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 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...

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

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 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...

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...

Captain in the U.S. Army (USA), U.S. Marine Corps (USMC), U.S. Air Force (USAF), and U.S. Space Force (USSF) (abbreviated "CPT" in the USA and "Capt" in...

Soviet Armed Forces from 1946 to 1992. It was preceded by the Red Army. After the Soviet Union ceased to exist in December 1991, the Ground Forces remained...

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....

between the Union and Confederate armies between July 1 and July 3, 1863, in and around Gettysburg, Pennsylvania. The battle, won by the Union, is widely...

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...

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...

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

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...

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

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),...

XVIII Corps was a North Carolina corps of the Union Army during the American Civil War. The XVIII Corps was created on December 24, 1862. It was initially...

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

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...

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...

Civil War. The combat between the Union Army of the Potomac commanded by Maj. Gen. Ambrose Burnside and the Confederate Army of Northern Virginia under Gen...

X Corps was a corps of the Union Army during the American Civil War. It served during operations in South Carolina in the Department of the South, and...

into battle under more favorable conditions. Elements of Lee's army beat the Union army to the critical crossroads of the Spotsylvania Court House in Spotsylvania...

the Army of the Cumberland on December 31 along the Stones River. The attacks started at 6 a.m. against the Union right wing and forced the Union flank...

Soviet Union in 1944, from the previously existing Polish I Corps in the Soviet Union, as part of the People's Army of Poland (LWP). The First Army fought...

XXIV Corps was a corps of the Union Army during the American Civil War. The Union Army of the James was formed in April 1864 under the command of Major...

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...