After General Flavius Stilicho repelled the Visigoths at Pollentia and Verona, he encountered a new incursion of Vandals and Goths led by Radagaisus whose forces attacked Florence.

[6] After overrunning the undefended Raetia and northern Italy, heavily devastating the fertile countryside, they halted to besiege Florence, only 180 miles north of Rome.

[7] Stilicho, Master-General of the west, hastily gathered forces for the defense of Italy, enrolling in his service a tribe of the Alani, and numbers of the Goths under Sarus and the Huns under Uldin, his army amounting to some 20,000 Romans and Foederati soldiers.

[8] Radagaisus, by comparison, who likewise had in his army miscellaneous detachments of Goths and Alani, had as many as 20,000 barbarian warriors at his back, amounting, together with wives, slaves, and children, to between 50,000 and 100,000.

After the lines of circumvallation were completed Radagaisus admitted the hopelessness of his situation, trapped as he was in the midst of enemy territory with no provisions and a vast number of non-combatants in need of subsistence.