Why does the Phalanx work so well?

The Phalanx works effectively due to its tight formation, which maximizes collective defense and offensive strength. Soldiers positioned closely together can shield one another with overlapping shields and present a unified front, making it difficult for enemies to penetrate. This disciplined structure enhances coordination and allows for powerful, synchronized movements, making the Phalanx a formidable force in battle. Additionally, its simplicity in execution allows for easier training and implementation among troops.