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Legio I Germanica

Legio I Germanica
Active 48 BC to 70 AD
Country Roman Republic and Roman Empire
Type Roman legion (Marian)
Role Infantry assault (some cavalry support)
Size Varied over unit lifetime. Approx. 3,500 fighting men + support at the time of creation.
Garrison/HQ Hispania Tarraconensis (30 - 16 BC)
Germania Inferior (beginning 1st century - 69 AD)
Nickname(s) Germanica, under Augustus
Mascot(s) Taurus
Engagements Battle of Pharsalus (48 BC)
Cantabrian Wars (29 BC–19 BC)
Drusus Germanic campaign
Revolt of the Batavi (70)
Commanders
Notable
commanders
Julius Caesar (campaign)
Drusus (campaign)
Fabius Valens (officer)
Herennius Gallus (officer)

Legio I Germanica, the 1st Germanic Legion, was a legion of the Imperial Roman army, possibly founded in 48 BC by Gaius Julius Caesar to fight for him in the civil war against Pompey. The title germanic is a reference to its service in Germany, rather than the place of origin of its soldiers. After the Revolt of the Batavi (AD 70), the remaining men of the Germanica were added to Galba's seventh legion, which became VII Gemina. The emblem of Legio I is unknown, but it was probably Taurus, like all the other legions levied by Caesar (except the V Alaudae).

There are two 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. In that case it would have fought in the Battle of Pharsalus in 48 BC.

A second theory attributes its recruitment to Gaius Vibius Pansa Caetronianus, a partisan of Caesar, who died in the Battle of Forum Gallorum against Mark Antony in 43 BC. Legio I would have been recruited in that year for that campaign.

However recruited, Legio I was inherited by Augustus and therefore ought to have been entitled to the cognomen Augusta after distinguished service under his eyes; however, there was no Legio I Augusta. That title was stripped after a defeat in the Cantabrian wars and the loss of its standard to the Astur and Cantabrian peoples.

The career of Legio I subsequent to the civil wars remains somewhat unclear. It is believed to be identical to the Legio I that took part in the Spanish campaign against the Cantabri conducted for Augustus by Marcus Agrippa and was disgraced there. Inscriptions on Spanish coins indicate that between 30 and 16 BC, some Legio I was stationed in Hispania Tarraconensis, where they would have fought in the war against the Cantabrians and Asturians. Dio Cassius (54.11.5) says that one legion was stripped of its title, Augusta, after suffering reverses in that campaign. The two references are believed to be to the same legion, accounting for its early missing title and emblem.


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