
The Invisible Army - Part 1: Alexander's Invisible Army
The Invisible Army ← Series Home Key Takeaways Logistics as strategy: Alexander's campaigns succeeded because he planned supply before battle—timing sieges to coincide with harvests, selecting routes based on water sources, not just enemy positions. Light and fast beats heavy and slow: By minimizing baggage trains and maximizing soldier self-sufficiency, Alexander achieved speeds of advance that wouldn't be matched until motorized warfare. The tyranny of the horse: Cavalry horses consume 10x more fodder than a soldier eats grain—Alexander's army ate its way across Asia, and understanding this constraint explains his route choices. Logistics determines limits: Even Alexander couldn't sustain a campaign beyond the limits of supply. His army mutinied at the Hyphasis River not from cowardice but from exhaustion—they had reached the edge of what logistics could support. The Conquest That Shouldn’t Have Worked In 334 BCE, Alexander III of Macedon crossed the Hellespont into Asia with approximately 48,000 infantry, 6,000 cavalry, and enough supplies for… about thirty days. ...

