After 18 January 313, Constantine was in Mediolanum (Milan, Italy). There Constantine met his co-emperor, Licinius, in January or February. Either in autumn 313 or during the first half of 314, Constantine travelled to Britain. On 1 August 314 in the city of Arelate (Arles, France), the Council of Arles started (a meeting of bishops. Constantine was consul for the fourth time in 315. In the first half of 315, Constantine probably had success in a military campaign he fought against the Goths and Sarmatians.