British WW1 Armor
It would be British tanks that would become part of the first tank-versus-tank duels in the history of Mechanized warfare, with this action being recorded as a draw against German tanks.

1 Little Willie Landship The idea of a tracked armored fighting vehicle was put into practical military thought thanks to the ushering of one Winston Churchill in the early rounds of World War One. Having assembled together thinkers for his "Landship... 1915

2 Mark IX The Mark IX tank was classified as an armored personnel carrier - effectively the world's first of its kind anywhere in operation service. The system was designed to a purpose-specific requirement needing an armored vehicle c... 1918

3 Medium Mark C (Hornet) The Medium Mark C tank was a promising and notably agile armored system that arrived too late to see combat action in World War 1. Though categorized as a tank, the system was specifically an "armored fighting vehicle" (or "A... 1918

4 Medium Tank Mk A Whippet The Mark A was developed from the “Little Willie” design for use in World War I and called the "Whippet" by the designer. The tank was designed to exploit breaches in the battle line created by heaver tanks like the Mark 1. ... 1918

5 Tank Mark VIII (International Tank / Liberty) The Mark VIII "International Tank" (also "Liberty" when powered by the Liberty engine) would become the first tank in history to be produced via an international collaborative effort - this made possible through an agreement ... 1919

6 Tank Mk I (Centipede / Big Willie / Mother) The Mk I was a ground breaking medium-class tank system of the First World War that combined well-thought out design and effective battlefield use in conjunction with ground and air forces. The Mk I system would become an ins... 1916

7 Tank Mk IV Male / Female The Tank Mk IV was a further development of a British heavy tank design that started with the Mk I series. The system was built upon the lessons learned of that system and included benefits garnered from the development of th... 1917

8 Tank Mk V Like its predecessors before it (the Mk I, Mk II, Mk III, Mk IV systems), the Mk V was an evolved design based on battlefield needs and experience. It was the first heavy tank in this family to feature a powerplant specifical... 1918