Technologies of World War I
- machine gun
- barbed wire (mass produced)
- improved artillery and hand grenades
- gas (mustard, nerve, tear)
- tanks (and other gasoline powered vehicles)
- airplanes (surveillance and anti-ship)
- radio
- submarines
- instant potatoes
- safety razors
Technologies of WWII
- Jet engine aircraft
- Aircraft carriers
- RADAR
- SONAR
- Missiles: the German V-1 and V-2
- Communications: smaller and more powerful radios
- Computers: code and code-breaking machines; German railroad scheduling; draft notices
- ersatz: nylon (polyesters), bakelite plastics, synthetic rubbers
- atomic weapons