Roman legion
The development of the early legion may be seen as a Roman version of the Greek phalanx formation. Until the 4th century BC the massive Greek phalanx was the mode of battle. Roman soldiers would have thus looked much like Greek hoplites. Tactics were no different from those of the early Greeks and battles were joined on a plain. Spearmen would deploy themselves in tightly packed rows to form a shield wall with their spears pointing forwards.