Conventional warfare: Traditional military tactics involving large-scale battles between organized forces using standard weapons.
Guerrilla warfare: Irregular tactics used by small groups to harass and weaken larger enemy forces through ambushes, hit-and-run attacks, and sabotage.
Blitzkrieg: A lightning-fast form of warfare characterized by surprise attacks and rapid advances using combined arms (infantry, tanks, aircraft) employed by Germany at the beginning of World War II.