“That is for cleanliness in the field and hygiene.”
No. It was an aid to get rid of individuality and make them all the same for sake of being trained for a team. That is why they wear uniforms.
The hair grew back out normally.
Alexander the Great mandated that all his soldiers be clean shaven so an enemy could not grab them by the beard in close combat.
I would assume the rules for wrestling prohibiting dreadlocks are along the same lines.
Oh. OK. I get it now.