After the tank was used in World War I, it showed a powerful assault force. J.F.C Fuller, Chief of Staff of British Tank Army, first summarized the experience of using tanks in this war. In the plan drafted by 19 19 in May, 1965438 put forward a new viewpoint of establishing and using mechanized troops. Later, it was further elaborated in Tanks in World War (1920) and On Future War (1928, translated as mechanized warfare theory in Chinese), and the theory of mechanized war was founded.
Fuller believes that after the appearance of tanks, the mechanization of the army is an inevitable development trend, and war will be a purely mechanized activity. The victory or defeat of the war "99% lies in weapons", and the side with more tanks on the battlefield has a great chance of winning. He believes that cavalry will withdraw from the battlefield, infantry will become auxiliary arms, and artillery needs to improve its mobility. It also advocates attacking the enemy's depth with tanks, destroying its headquarters, bombing its transportation hub and supply system with planes, and then using motorized infantry and artillery to expand the results, chasing and annihilating the fleeing enemy and winning the first world war. Although Fuller's theory points out some trends in the development of army building and combat mode, it exaggerates the role of tanks and belittles the role of people and other arms in the war.
After fuller, German H.W. guderian, French C. De Gaulle and Austrian L.von Eimansberger also advocated the theory of mechanized warfare from different angles. This theory was also accepted by German fascist leader A Hitler and his high command, and was applied to the blitzkrieg in Poland, France and the attack on the Soviet Union in the early World War II.