Most Americans think Cinco de Mayo is Mexican Independence Day. It isn’t. (That’s September 16.) May 5 commemorates the Battle of Puebla. That’s the day an outnumbered, outgunned Mexican militia stopped the most feared army in the world on a muddy hill.
That story is the best tech strategy lesson on the calendar.
The Setup: Best Army in the World vs. a Bankrupt Country
In 1862, France was the world’s elite military power. Napoleon III sent ~6,000 professional soldiers, fresh off victories across Europe and Asia, to march on Mexico City and install Maximilian as emperor. They expected a parade.
Mexico had just lost half its territory to the United States. The treasury was empty. The army was barely an army. At Puebla, General Ignacio Zaragoza had ~2,000 defenders, many of them militia and indigenous fighters, dug in around two old forts.
The math said France wins by lunch.
The Battle: Terrain Beat Troop Count
The French commander, Lorencez, ordered three frontal assaults up the muddy slope at Fort Guadalupe. He chose to hit the strongest point in the line because his army was supposed to be unstoppable. The mud slowed the cavalry. The defenders held the high ground. A young officer named Porfirio Díaz flanked the French right when they faltered.
By late afternoon, the French were retreating. Zaragoza’s report read:
“Las armas nacionales se han cubierto de gloria.” The national arms have been covered in glory.
It didn’t end the war. Mexico City still fell the next year. But Puebla bought time, forged a national identity, and proved something useful: a small force on the right terrain beats a big force on the wrong terrain.
The 2026 Parallel
Look at where you’re sitting right now. Your competitor has 500 engineers, $50M ARR, a brand moat, and a sales army. You have a team of three and a Stripe account.
The math says they win by lunch.
The math is wrong, the same way Lorencez’s math was wrong. The terrain has changed.
For the first time in software history, the cycle time of a single builder with AI is shorter than the cycle time of a 20-person team without it. What used to take a quarter takes a week. What used to take a sprint takes an afternoon. The leverage curve isn’t 2x or 5x. It’s the difference between attacking up a dry road and attacking up a mud slope.
Big incumbents are Lorencez. They have the headcount, the reputation, and the playbook. They will charge straight up the hill because that’s what their org chart says to do. Every shipped feature has to clear seventeen stakeholders. Their cycle time is structural.
You don’t have any of that. That’s the feature.
What This Means If You’re Reading This Today
Three things.
1. The window is now, not later. Lorencez was beaten in 1862, but France came back in 1863 with reinforcements and won the war. The terrain advantage doesn’t last forever. Right now, incumbents are slow, AI tooling is mature, and customer expectations haven’t reset. In 18 months, incumbents will have shipped their copilots, raised their AI rounds, and locked their distribution. The mud dries out.
2. Don’t staff up. Stay small. Pick narrow. The instinct when you see a competitor’s Series C announcement is to raise and hire. That’s choosing to fight the war they’re built for. Pick a narrow front instead. One workflow, one persona, one stadium, one league. Use AI leverage to dominate it before they notice.
3. Think bigger than your headcount tells you to. This is the one most founders get wrong. They build small because they staff small. They aim small because they’re punching with three people instead of fifty. Three people with the right AI stack ship at the throughput of fifty without it. Aim at the work of fifty. Aim at the work of two hundred. Aim at categories that “small teams don’t go after,” because that rule was written before the terrain changed.
The Takeaway
Zaragoza didn’t win at Puebla by having more soldiers. He won by choosing ground where his disadvantages didn’t matter and his advantages compounded.
That’s what AI gives a small team in 2026. Not a productivity boost. A terrain advantage. Use it before it dries out.
The national arms have been covered in glory. Now go cover yours.