What war inventions do we use in everyday life?

Answer 1

with ww2, we saw a dramatic increase in the use of and advances in the mechanized assembly line. (used to make things like weaponry, shells, vehicles, tanks, planes)

there was also a push to improve upon the plane. they showed their effectiveness in ww1, though the models used then were rickety and not to be trusted. in ww2, they were put to use as spy planes, used in dogfights, used to bomb large patches of area in the European theatre (mostly) with napalm, and used in the atomic attacks on nagasaki and Hiroshima.

we also use some of the chemical research done then by companies like the German ig farben, of which today's bayer pharmaceuticals and r/d is a derivative. for instance, mustard gas (which was popularized in ww1 and subsequently outlawed in proper warfare) is one of the by-products created when splitting compounds to make plastics.

for more modern-day warfare, we have things like secure phones and laptops with incredible security procedures. thumb print recognition to open, really deep encryption codes, etc.