Tank Ex, or MBT Ex, is the code name of a main battle tank developed by the Indian Defence Research and Development Organisation (DRDO) in 2002. It is rumored to be called "Karna", after one of the heroes of the Indian epic "The Mahabharata"''. Tank-Ex was developed as a second attempt after Ajeya (upgraded T-72) by DRDO to harness its technology spin-offs. The Tank Ex successfully undergone six months of trials, however it was rejected by the Indian Army. At least two prototypes have been built.

The Tank-Ex/MBT-EX is a new prototype tank developed for the Indian Army by the Defence Research and Development Organisation (DRDO) in 2002. This tank has been developed by integrating a modified low silhouette chassis of in-service T-72 tank and a re-engineered Arjun MBT turret. The Tank-EX is intended to provide a solution for upgrading the Indian Army's aging T-72M1 fleet. Tank EX is more of a hybrid between the Arjun tank and the T-72M1, with armor and firepower characteristics used from both models. According to sources at the DRDO at least 2 prototypes have been built, and improvements are being made constantly.

A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility and tactical offensive and defensive capabilities. Firepower is normally provided by a large-calibre main gun in a rotating turret and secondary machine guns, while heavy armour and all-terrain mobility provide protection for the tank and its crew, allowing it to perform all primary tasks of the armoured troops on the battlefield.

Tanks in World War I were developed separately and simultaneously by Great Britain and France as a means to break the deadlock of trench warfare. Their first use in combat was by the British Army on September 15, 1916 at Flers-Courcelette, during the Battle of the Somme. The name "tank" was adopted in Great Britain during the early stages of their development, as a security measure to conceal their purpose (see Etymology).

Tanks of the interwar period evolved into the designs of World War II. Important concepts of armoured warfare were developed; the Soviet Union launched the first mass tank/air attack at Khalkhin Gol (Nomonhan) in August 1939, which later resulted in the T-34, a predecessor of the main battle tank; this was quickly followed up by Germany on a larger scale when they introduced blitzkrieg ('lightning war') less than two weeks later; a technique which made use of massed concentrations of tanks supported by artillery and air power to break through the enemy front and cause a complete collapse in enemy resistance and morale.

Elias Toufexis is a theater, voice-over, motion capture and television and film actor. He is half Greek, part Scottish and German. Toufexis is best known for his appearances on the TV series Smallville and Supernatural. He is also known for his work in videogames, particularly as Andriy Kobin in Splinter Cell and as Adam Jensen in Deus Ex: Human Revolution.

He graduated with a DEC in Theatre from Dawson College in Montreal in 2000. In 2001 he went to New York City and attempted to make a career for himself. After a little over a year and a handful of off-on Broadway and fringe festival plays, he returned to Montreal broke. He managed to get himself an audition for Canadian science fiction comedy film Decoys, landing the second lead role of Roger. The film was not successful but it gave him enough money to move out to Vancouver, Canada and pursue acting there.

Elias landed small roles at first and then he booked the role of Morton in The Five People You Meet In Heaven based on Mitch Albom's book. He got to work closely with Jon Voight, Michael Imperioli and Jeff Daniels. He has been quoted as saying "I never learned as much about what acting is in three years of theatre school as I did from three weeks working with these actors"

Kurt Waldemar Tank (February 24, 1898 – June 5, 1983) was a German aeronautical engineer and test pilot, heading the design department at Focke-Wulf from 1931–45. He designed several important aircraft of World War II, including the Focke-Wulf Fw 190 fighter aircraft.

Tank was born in Bromberg (Bydgoszcz), Province of Posen. His grandfather was a cavalry sergeant in the Uhlans and his father, Willi Tank, was a grenadier sergeant in the 3rd Division. When World War I broke out Tank wished to join the Imperial German Army Air Service, but his father insisted he instead follow the family tradition and enlist in the cavalry. He ended the war as a captain, with many decorations for bravery.

After the war, Tank graduated from the Technical University of Berlin in 1923. A mentor from the university secured him his first job, in the design department of Rohrbach Metallflugzeug GmbH, where he worked on flying boats and assisted in the design of the passenger aircraft, the Ro VIII Roland. Tank moved on to Albatros Flugzeugwerke, where he worked as a test pilot. The Albatros company went bankrupt in 1929 and in 1931, under government pressure, was merged with Focke-Wulf.