British MkIV tank found at:https://c2.staticflickr.com/4/3223/2327945386_3ee6200089_b.jpg |
Tanks were first used by the British & Canadian army in September 1916 at the Battle of Flers Courcelette where most of them broke down, but later versions proved more successful. http://www.canadianmilitaryhistory.ca/wp-content/uploads/2012/03/2-McEwen-Tanks-at-Courcelette.pdf