Legio IX Hispana served with Julius Caesar in Gaul and against Pompey in the Civil Wars. Later, it fought alongside Augustus in his Cantabrian Wars and was one of the four legions Claudius took with him in his invasion of Britain in 43 CE. It survived mutiny and near decimation twice, only to recover. Although suffering heavy losses during the revolt of Boudicca, the legion rebounded and accompanied Agricola in his war against the Caledonians. The legion disappeared sometime after 120 CE.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Legio_IX_Hispana/.