The Phalanx was popular military tactic in Ancient Greece and was used by the Roman and Macedonians.

A Phalanx was like a wall of spears and shields. Greek hoplites armed with a spear and shield were packed together. Usually it was about 8 men deep.
The Spartans and other Greeks formed a Phalanx to battle the Persians at Thermopylae
by AllosaurusFragilis December 21, 2018
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