There are designs dating back to Leonardo da vinci. The first practical use was in World War 1. They were used to break the stalemate in the trench warfare.
Da Vinci didn't design a tank. He designed a muscle-powered, moving shelter that ran on wheels. The idea goes back centuries before that. It was only once the caterpillar track and the petrol engine had been invented that building a true tank became possible. Military tanks (armoured fighting vehicles with armament, that run on tracks and can operate off-road) were designed in several countries in the decade before WWI - France, Austria, and Australia in particular - but not built. A prototype was built in Russia once the War began, but development went no further. It was in Britain and France that military men looked for a way of overcoming the stalemate on the Western Front and, after considerable experimentation, what we now call a tank proved to be the most suitable means. The problem is whether you mean "when was it thought of?" or "when was one made?" Both are difficult to answer, because lots of people imagined something that would do what a tank does, and several ideas came together (in both Britain and France) to result in tanks. It was a process. The best evidence we know for certain is that a Frenchman called Levavasseur offered the French Army something quite like a true tank in 1903.
The Tank.
The British. They were trying to disguise what they were, and said they were a new kind of water tank.
The first military tank was invented by Englishman Sir Albert Gerald Stern, who was a key figure in the development of the tank during World War I. Working with a team at the British Army's Landship Committee, Stern played a crucial role in the design and production of the Mark I tank, which made its debut in 1916. The tank was developed to overcome the challenges of trench warfare and to provide mobile firepower on the battlefield.
No single individual person invented the military tank. Mr. (later Sir) Eustace Tennyson d'Eyncourt head of the British "Landships Committee" during WWI is the closest person that can be credited for inventing the military tank. It was under his supervision that the FIRST army tanks were designed, built, and fielded onto the battlefields during WWI.
the US Army invented the Sherman tank.
sensha is military tank tanku is water tank
The British did. They were trying to deceive the Germans into believing they were for transporting water to troops in places wheeled vehicles couldn't go.
To advance over obstacles like barbed wire, to conceal troops behind it, to scare the enemy, to attack machine gun positions.
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Panzer=Armor=Tank. Tanks were initially invented to breach enemy lines (in WWI).
the british invented, and introduced it at the battle of somme
M1-J10 Main Battle Tank.