Mark I Tank

The Mark I is a British tank, the first tank ever used in combat, designed in 1915 by a small British engineering team working under wartime secrecy and first deployed at the Battle of the Somme in September 1916, built with a distinctive rhomboid shape and tracks running around the entire body of the vehicle, a design chosen specifically to give it the ability to cross the wide, water-filled trenches and heavily cratered ground of the Western Front that had brought conventional infantry and cavalry assaults to a bloody standstill. Built in male versions armed with two small naval cannons and female versions armed only with machine guns, the Mark I proved mechanically unreliable and vulnerable to artillery fire in its first actions, and many broke down or became stuck before reaching the enemy line, but the surviving vehicles' ability to cross trenches and flatten barbed wire while remaining largely immune to rifle and machine-gun fire demonstrated the basic concept's military value. Despite its serious early flaws, the Mark I's combat debut is generally regarded as the birth of tank warfare, launching a rapid line of increasingly capable British tank designs through the rest of the First World War and establishing the tank as a permanent feature of land warfare thereafter.