From 1206-1945: Inventions made by war

Silly putty, margarine and instant coffee. It might be strange to believe, but we have some of the world's largest military forces to thank for them! Throughout history, military strategists have called for products to be made, even if they hadn't been used until years later, which have trickled down to consumer use. Here's ten products/services you may not have known were created because of a war.