Galba enters Rome. Massacre of Marines at Mulvian Bridge.

His government controlled by Laco, Vinius, and Icelus.

A.D. 69.

_January_

1. News of mutiny in Upper Germany, now governed by Hordeonius
Flaccus.

3. The armies of Upper Germany (under Caecina) and of Lower Germany
(under Valens) salute Vitellius, Governor of Lower Germany, as
Emperor.

10. Galba adopts Piso Licinianus as his successor.

15. Otho declared Emperor in Rome and recognized by Praetorian
Guard.

Murder of Galba, Vinius, and Piso.

Otho recognized by the Senate.

_February_

The Vitellian armies are now marching on Italy: Caecina through
Switzerland and over the Great St. Bernard with Legio XXI Rapax
and detachments of IV Macedonica and XXII Primigenia: Valens