The name of the Roman Legio I was Germanica and it was levied probably by Gaius Julius Ceasar at 48 BCE to fight for him against Pompey during the civil war [de Bello Civili]. The name Germanica was granted in the turn of of the century for the distinguished service in Germania. In the history of the Legio 1 there was a mutiny at 13 CE, a possible disgrace in Spain at 16 CE and finally was disbanded at 70 CE by Emperor Vespasian.
Legio Maria was created in 1962.
Legio I Parthica was created in 197.
Legio III Diocletiana was created in 296.
Legio III Gallica ended in 219.
Legio III Parthica was created in 197.
Legio II Italica was created in 165.
Legio IV Scythica ended in 219.
Legio IV Italica was created in 231.
Legio II Parthica was created in 197.
Legio II Traiana Fortis was created in 105.
Before becoming emperor Hadrian served as a military tribune three times in three different legions (The Legio II Adiutricix, Legio V Macedonica and Legio XXII Primigenia) and as a leguatus legionsis (commander of a legion) in the Legio I Minervia.
legio