A squadron is a small unit or formation of cavalry, armour, aircraft (including balloons), or warships. Army and Marines A cavalry squadron (horse or armoured), typically consists of four troops. United States In the United States Army, a squadron is the Cavalry equivalent of an infantry battalion or artillery battalion, it's used for Armored Cavalry and Air Cavalry units. Prior to the revisions in the US Army structure in the first decade of the last century, US Cavalry Regiments were divided i… (More on Squadron)