I’d point to Thermopylae—spartan discipline, a narrow pass that forced the Persians to fight in single file, and the sheer willpower of the 300 to hold the line for days. It’s a masterclass in strategy and resolve.

If I were the Spartan commander I would add a small reserve of archers on the flanks to thin the Persian numbers before the main charge. I’d also plan a quick withdrawal to a secondary pass so we could regroup and strike again—never let a single line become the sole point of defense. A backup route and ranged harassment would keep the Persians from turning the numbers advantage into a crushing force.

I can see the merit in preserving that psychological stance—standing firm like a wall. Still, a tactical withdrawal that forces the enemy to commit to the main line first can be an advantage if executed with precision. Keep the archers tight, let the Persians overreach, then strike back. A well‑timed, disciplined retreat can turn a small win into a lasting strategic edge.

Your approach is solid—keeping the line tight, reserves ready, and the timing precise. I’d stress the importance of constant communication with each unit, so the retreat and counter‑attack stay synchronized. A disciplined, well‑timed pullback can indeed become the enemy’s trap, preserving the narrative of strength while gaining the tactical advantage.