List of Military Inventions that Have improved civilian life?

Question

I want to see how many we can come up with. Over the course of history humans have fought countless wars and battles, but with all this carnage came inventions that we are able to use today.

An example is the jet engine, while it was a military invention at first today it has major use in civilian use and has allowed humans to travel at a much faster pace then just 100 years ago.

Post as many as you can think of. Poster with the most gets the 10. Also list what War/Battle were the invention was first used or invented. Minus well make this somewhat educational.

Answer 1

Here, is a list of military inventions, that are now commonly used by the civilians:

Canned Food

Plastic Surgery

Trench Coats