Legio X Gemina

Legio X Gemina
Map of the Roman empire in AD 125, under emperor Hadrian, showing the Legio X Gemina, stationed on the river Danube at Vindobona (Vienna, Austria), in Pannonia Superior province, from AD 103 until the 5th century
Active	Before 58 BC to sometime in the 5th century
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. Expanded and given the cognomen Gemina in 31 BC.
Garrison/HQ	Hispania Tarraconensis (31 BC – c. 71) Nijmegen (71–103) Vienna (103–5th century)
Nickname(s)	Equestris, "Of the knights" under Caesar Gemina, "The twin" (since 31 BC) Pia Fidelis, "faithful and loyal" (since 89) Domitiana, Antoniniana, Gordiana, Deciana, Floriana, Cariniana (short-lived) Pia VI Fidelis VI (after 260)
Mascot(s)	Bull
Engagements	Gallic Wars (58–51 BC) Battle against the Nervians (57 BC) Battle of Gergovia (52 BC) Battle of Ilerda (49 BC) Battle of Dyrrhachium (48 BC) Battle of Pharsalus (48 BC) Battle of Munda (45 BC) Battle of Philippi (42 BC) Battle of Actium (31 BC) Batavian rebellion (70) Second Battle of Tapae (101) Bar Kokhba's revolt (132–135) Marcomannic Wars in Moravia(168–180) Naissus (268) Vexillationes of the 10th participated in many other campaigns.
Commanders
Notable commanders	Julius Caesar, Mark Antony

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Legio X Gemina ("10th Twin(s) Legion (for those interested in grammar, it's either "Female Twin" or "Neuter Twins"; "Male Twin" is Geminus and "Male Twins" is Gemini)"), was a legion of the Imperial Roman army. It was one of the four legions used by Julius Caesar in 58 BC, for his invasion of Gaul. There are still records of the X Gemina in Vienna in the beginning of the 5th century. The legion symbol was a bull. Early on in its history, the legion was called X Equestris (mounted), because Caesar once used the legionaries as cavalry.