The Hammer and Anvil (Σαρισαφοροι & Ἑταῖροι): Philip II and Alexander revolutionized warfare by combining dense infantry syntagma blocks with devastating, mobile shock cavalry.
"The phalanx does not conquer; it fixes the enemy in iron jaws so the wedge cavalry may decapitate their leadership." — Arrian
The 18-foot sarissa held opponents out of reach, while Alexander personally led the wedge charge directly at the opposing commander.
At the Granicus (334 BCE), Alexander recklessly charged across steep muddy riverbanks against Mithridates and Rhoesaces, nearly dying when Cleitus the Black severed Spithridates' raised scimitar arm.
Alexander marched without baggage trains that slowed traditional armies. Soldiers carried 30 days of grain (45 lbs each). When supplies failed—such as in the scorched Gedrosian desert—over 60% of camp followers and pack animals perished of thirst and heat exhaustion.