Because In WW1 soldiers were running across trenches and getting constantly getting killed in mass numbers by Machine guns so engineers devices a way to keep soldiers alive, and stop the enemy and destroy their trenches.
They invented military tanks mainly to make advances where the machine gun fire was too heavy for unprotected soldiers to advance on foot.
Air tanks were invented to hold compressed air.
The first functional battle tanks were invented in 1915
Horses were originally used because Tanks were not around. Once tanks were invented and employed for use the horse was continued in the military because they could haul ammunition and weapons up steep inclines and through places were vehicles could not go. Once cargo style planes and all terrain military vehicles were in use the horse was discontinued in the military.
Yes!
Fish tanks were not 'discovered' they were invented.
One can find information on military tanks from encyclopedias, both online and off, as well as books focused on the military. Online websites that offer interesting information on tanks include Military Factory and Military-Today.
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The military arrived with their tanks and guns.
Tanks
There are many websites that are dedicated to the history of tanks. The Military Channel from Discovery is one of the most prominent resources of the history of military tanks. There are also encyclopedias and books available for purchase from Amazon.
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