1. WWI Military Weapons / Tactics
Trench warfare
Machine gun
Air warfare: Zepplins
Hand grenades (High explosive shells)
Tunneling (plant explosives underground)
Chemists’ War: Mustard Gas, Nerve Agents
Railways dominated
Submarines
Tanks (makes trenches obsolete)

2. World War I
World War II

3. WORLD WAR II Weapons & Tactics
TANKS: Fast, low, heavily armored
Strategic air warfare (destroy enemy’s industry, cities, morale)
Tactical air warfare (attack enemy’s troops on battlefied)
Airborne combat troops: paratroops / gliders
Submarines  torpedos
Aircraft carriers
Poison gas
Hand-carrieded rocket launchers (bazooka)

4. Flamethrowers