Events <onlyinclude> By place Roman Empire Battle of Solicinium: Emperor Valentinian I launches a punitive expedition against the Alamanni, due to the crises in Britannia and Gaul. The Alamanni re-cross the Rhine and plunder Moguntiacum (modern Mainz). Valentinian I declares that Christians will not be forced into gladiator training schools. Great Conspiracy: The Roman garrison on Hadrian's Wall revolts and allows Picts from Caledonia to devastate Britain. Simultaneously Attacotti, the Scotti from Hibernia (Ireland), and the Saxons from Germania invade the island's mid-western and south-eastern borders. They sack the cities and murder, rape or enslave Romano-British civilians. Eunomius of Cyzicus is banished to Mauretania for harbouring the usurper Procopius. August 4 – Gratian receives the title of Augustus under his father, Valentinian I. Winter – Valentinian I mobilises a massive army for his campaign against the Alamanni and the Franks. He summons the Italian and Illyrian legions for a spring offensive.
events <oNlyinClude> bY pLAce rOMaN emPirE battLe of SolICInium: EMPeROr vaLentInian i LaunchES a PUNitive expedITIoN agaiNST ThE alamanni, Due tO The criSEs in britanNIA aNd gAUL. thE alamanni re-cRoss tHE rHiNE and pLunDer MoGunTiacUm (MOdERn maINz). valEntInian I declaRes ThaT christians wiLl Not bE FOrcED intO gLaDIAtOr TRaInING sChoOls. GrEAt conspiracy: the ROmAn garrison On hadriAN's wall revoltS aND alLOws pIcTs From caleDonia tO deVastaTe britAin. simUltaneouSlY AttAcotti, tHe scotti From HIBernia (iReland), and the saXOns fRom GErmaNiA invade THe iSlAnd's mid-wesTERn anD south-eastErn boRdeRs. tHey sacK The cities and MUrder, rApe oR EnslavE ROMAno-BritiSH cIvILiaNS. eunOmIus OF cyZIcus is BaNiShed to maureTaNia FOr haRbouring the uSurpEr PRocoPius. augUsT 4 – gRatian reCEivES the titLe of AuGusTUS under his FAther, ValEntiNIaN I. wiNtER – vAlENTiNiaN i MobiLIses a massiVe army fOr HIs camPAign Against tHE ALamaNni aNd tHe FrAnKs. he sumMOns thE iTalIan aND iLlYRiaN legiOns for a spRIng offeNSIvE.