Tank

A tank was an armoured fighting vehicle.

History
When the Twelfth Doctor was having a party to celebrate what he believed would be his last days, he brought a tank to 1138. As a joke he claimed that he had bought it online for his fish, however the crowd didn't understand the reference. (TV: The Magician's Apprentice)

The Eighth Doctor anachronistically wondered if the sound of "scraping metal" heard by multiple soldiers one night in World War I was a tank, but found that they hadn't been invented yet. (AUDIO: The Great War)

In 1917, tanks were used against the Daleks on the Western Front. (COMIC: The Dalek Project)

The Monk's TARDIS briefly took the form of a World War II tank while the First Doctor was reprogramming its chameleon circuit to change its form to a police box. (TV: The Daleks' Master Plan)

During World War II, Oberon helped both sides develop tanks which could phase into higher dimensions. (PROSE: Autumn Mist)

In 1942, Captain Ernst Wolfgang Spiegal threatened to have a tank destroy a schoolhouse with the children still inside if Professor Pierre Vedrun and the Third Doctor were not returned to him. (COMIC: Timebenders)

In 1958, Area 51 deployed a battalion of tanks to battle a horde of Viperox levelling the town of Dry Springs, Nevada after their leader, Lord Azlok, turned against Colonel Stark and broke off a deal to help defeat the Soviet Union in the Cold War with a bioweapon. These tanks were equipped with muzzle brakes to steady the aim of the cannon turrets. Nevertheless, the Viperox were agile enough to jump away from the artillery bursts and took flight to remain out of attack range. (TV: Dreamland)

In the 1970s, the Brigadier brought a tank to deal with the K1 robot, but the robot used the disintegrator gun to destroy the tank. (TV: Robot)

In 1989, the Eleventh Doctor, Amy Pond and Rory Williams saw a tank being driven through the streets of Prague. (COMIC: The Broken Man)

On 24 December 2007, multiple Challenger 2 tanks destroyed the Webstar on orders from Harold Saxon with a heavy barrage of cannon fire. (TV: The Runaway Bride)

The Kraals deployed tanks in their second abortive invasion of Earth. The capabilities of this tank were unknown, but Marshal Grinmal expressed concern that his forces would be subject to counterattack and ambush while on the M1, indicating that these vehicles were susceptible to human anti-armour weapons. (AUDIO: The Oseidon Adventure)

UNIT rolled their best tank over a Shakri cube to test its incredible strength. (TV: The Power of Three)

On 1 January 2019, a tank accompanied a group of British Army soldiers which engaged a Dalek. It was destroyed by a missile launched from the Dalek's casing. (TV: Resolution)

Daleks used an especially lethal type of tank that had a giant version of their gunstick weaponry outfitted to the mortar barrel. Like other tanks, it was apparently difficult to recover if it was disabled. One was left broken down and abandoned during the Siege of Trenzalore. (TV: The Time of the Doctor) When explaining the creation of the Daleks to Clara Oswald, the Twelfth Doctor noted that Davros had essentially sealed his species in miniature tanks to survive the Thousand Year War. (TV: The Magician's Apprentice)