How would war lead to better technology?

War would lead to better technology because most countries don't want to lose a war. Most countries offer up money for any invention that can be used to defeat an enemy. Some countries when they see inventions more than expected they buy or make the inventor destroy it. Usually if a nation doesn't take that invention the other nation tries to buy it off the inventor.Some civilians don't want to lose in a war so they try to invent dangerous weapons to be used. Some inventions were guns bombs. Some people really don't want to lose a war so they do anything to invent a dangerous weapon.