Misleading question. Britain first made the tank in World Was 1. Britain made tanks through out the war years.
It was World War 1.
During the First World War.
The British Army first used tanks in World War 1.
They were the first tanks, and tanks eventually became a dominant force in warfare as we know it.
In tank factories
THe first tank to be made FOR the purpose of WWI was the Mark I Tank, built by Britain.
It made the war a mobile battle field!
Yes, world war 1 had tanks. World War 1 was the introduction of battle-ready tanks used in war.
Tanks first rolled onto the battlefield in World War I on September 15, 1916.
Yes, Great Britain has the first to use them.
The Sherman Tank and other tanks were made during the war from 1940 (aid to Britain) to 1945. They were all improvements on the first battle tanks made by the Brits in World War 1. See link below for a great explanation of the history of the tank.