German Units?

[chemchok]

"Throwing aside [therefore] their javelins, they fought with swords hand to hand. But the Germans, according to their custom, rapidly forming a phalanx, sustained the attack of our swords. There were found very many of our soldiers who leaped upon the phalanx, and with their hands tore away the shields, and wounded the enemy from above. Although the army of the enemy was routed on the left wing and put to flight, they [still] pressed heavily on our men from the right wing, by the great number of their troops."

Commentaries on the Gallic War , an account of Gaius Julius Caesar's campaign.
It's a good read if you have the time