What was the military formation of foot soldiers armed with spears and shields first developed by the Greeks called?

The military formation of foot soldiers armed with spears and shields first developed by the Greeks is called the phalanx. This formation involved soldiers, known as hoplites, standing closely together in rows, creating a formidable wall of shields and spear points. The phalanx was a highly effective tactic in ancient warfare, emphasizing discipline and unity among soldiers.