Battle of Pharsalus
There are three theories about I "Germanica" recruitment. The most favored is that it was raised by Julius Caesar in 48 BC to fight in the civil war against Pompey. The Legion first saw action at the Battle of Dyrracchium. In that case it would have fought in the Battle of Pharsalus in 48 BC. Another claim is that the legion was raised by Pompey and it fought against Caesar and Pharsalus, Thaspus, and Munda.