Just how could plastic water tanks possibly have anything to do with one of the most powerful weapons platform on land for the past seventy-odd years and counting? However it is true, and it all involves keeping secrets from your enemies.
The British were working on armored vehicles during The Great War and decided to give their project the code name of tanks, as in water tanks. On official reports these machines were in fact listed as “tanks” with the idea that any enemy spies who might discover such documents would be misled into thinking of them as nothing but water tanks. Of course, they have turned out to be nothing like plastic water tanks in any way!
However the earliest designs did in fact vaguely resemble simple water tanks, generally rectangular box-like structures of an enormous size made out of metal. It may be hard to imagine this today given modern models, but the first ones did appear to be nothing more than gigantic cargo containers of some kind. Not exactly plastic water tanks, granted, but close enough!
As it turned out, World War I was over before the military tank was able to meet its devastating potential, but in the almost a hundred years since that time the tank has dominated the battlefield, forming the core of any land-based strategy. The development of attack helicopters and special low-flying aircraft specifically designed for a “tank-busting” role, not to mention unmounted guided missle systems that could be served by a single soldier, has greatly diminished the tank’s supremacy but it has not wholly undermined it. Even the asymmetrical warfare presented by jihadis has not rendered the tank obselete; NATO fields a small number of them in Afghanistan, and an M1A2 Abrams platoon of the United States Marine Corps is on its way to join the war.