The British Army was the first to use tanks in World War I, introducing them at the Battle of Flers-Courcelette in September 1916.

The first tank used by the British Army was the Mark I, which was also known as the Little Willie.

The British Army did not have any tanks at the start of World War I.

The British Army had approximately 2,000 tanks by the end of World War I.

The main armament of the Mark I tank was two machine guns.

The maximum speed of the Mark I tank was 3 mph.

The range of the Mark I tank was 20 miles.

The Mark I tank had a crew of eight.

The Mark I tank weighed 28 tons.

The armor thickness of the Mark I tank was 10 mm.

Italy was the first country to use aircraft in World War I, using them for reconnaissance missions in 1911.

The first aircraft used in World War I was the Blériot XI, which was used by the French Air Force.

The French Air Force had approximately 100 aircraft at the start of World War I.

The German Air Force had approximately 200 aircraft at the start of World War I.

The main role of aircraft in World War I was reconnaissance.