In 49 BC, perhaps on January 10, Julius Caesar led a single legion, Legio XIII Gemina, south over the Rubicon from Cisalpine Gaul to Italy to make his way to Rome. In doing so, he deliberately broke the law limiting his "imperium", making armed conflict inevitable. Suetonius depicts Caesar as undecided as he approached the river, and attributes the crossing to a supernatural apparition. It was reported that Caesar dined with Sallust, Hirtius, Gaius Oppius, Lucius Cornelius Balbus and Servius Sulpicius Rufus on the night after his crossing.