Guerrilla Warfare: Guerrilla warfare is a type of unconventional warfare where small groups use surprise attacks and ambushes against larger, more conventional forces.
Trench Warfare: Trench warfare is a defensive strategy used during World War I where soldiers would dig elaborate trenches as protection from enemy fire.
Blitzkrieg: Blitzkrieg, meaning 'lightning war,' was a strategic shift used by the Germans during World War II that involved swift and overwhelming force combined with air power.