The United States Army was the land-based branch of the United States armed forces.
During the 19th century, in the period of the American Civil War, the Army was known as the Union Army.
The Union Army utilized observation balloons that were tendered at around six hundred feet high. (TOS: "The Savage Curtain")
William T. Riker's ancestor, Thaddius Riker, was a colonel in the Union Army during the Battle of Pine Mountain in the Civil War, part of Sherman's March on Atlanta. (VOY: "Death Wish")
By 1893 an Army base existed in the middle of the Presidio in San Francisco. (TNG: "Time's Arrow, Part II")
During World War I, the US Army operated Renault FT tanks when it was deployed in France, as witnessed by Captain Jonathan Archer when he watched the time stream resetting, after he and the cew of Enterprise had managed to restore it. (ENT: "Storm Front, Part II")
The United States Army was deployed on several fronts when the Allies invaded Nazi-occupied France during World War II. (VOY: "The Killing Game", "The Killing Game, Part II")
Divisions of the ArmyEdit