- Blitzkrieg: Lightning War
- Quick and decisive
- Deep thrust into enemy lines rather than a broad front attack
- Combined-arm offensives
- Infantry
- Artillery
- Tanks
- Close air support
- Exploited gaps in the French lines
French Strategy:
- Maginot Line: Massive fortfication line along Germany border
- Defend until allies could be brought to bear
- Mobile reserve divisions to counter-attack as needed