The Imperial Knights, or Questor Imperialis in High Gothic, are piloted robotic combat walkers of medium size in the service of the Imperium and sometimes the Adeptus Mechanicus. Each Knight is piloted by a single Human warrior drawn from an ancient feudal aristocratic culture that stretches across the galaxy. However, a Knight is smaller and less capable in combat than even the smallest class of true Titan utilised by the Collegia Titanica, the Warhound-class Scout Titan. Knights normally deploy in squadrons comprised of several of these war machines. These ancient battlesuits stand thirty to forty Terran feet (9 to 12 metres) tall, are protected by nearly impenetrable Ion Shields and armed with a devastating array of heavy weapons. Imperial Knights are colossal war machines that tower over the battlefield. They are propelled into battle by powerful servos and have the power to kick over tanks and crush soldiers into red paste.