What formation did early Greek Soldiers march in?

Answer 1

Phalanx formations stretched over the battlefield. Usually, the right flank was guarded by elite troops. Choices were sometimes made to have a heavier right or left flank by adding troops in depth and width, thus creating more force of push against the opposing enemy. This enabled the hoplite phalanx or macedonian phalanx to turn and overrun the enemy line followed by an attack in the flank or rear of the enemy lines of battle. Light skirmisher troop usually proteced flanks or stood to the rear to fire at the enemies within small gaps in the line. Greeks were true infantry men and cavalry was often used for skirmishing or recon. Macedonians however were strong cavalry men that used different type of cavalry to overwhelm and harass the enemy. For Greek warfare the book of homer give accurate descriptions of how a battle would have looked if you can manage to think their Greek gods out of the picture.

Answer 2

They formed a Phalanx