World War II
The style of war on the land had changed from World War I to be more moveable. Tanks, which had been used to support infantry, changed to being primary weapons. The tank was improved in speed, armour and firepower during the war. At the start of the war, most commanders thought that using better tanks was the best way to fight enemy tanks. However, early tanks could harm armour only a little. The German idea to avoid letting tanks fight each other meant tanks facing tanks rarely happened. That was a successful tactic in Poland and France. Ways to destroy tanks also improved. Vehicles became more used in the war, infantry remained the main part of the army, and most were equipped like in World War I.