After this various bodies of men made assault at various points and committed every conceivable cruelty. In fact, they indulged in all the deeds for which they were censuring Vitellius and his followers and which they pretended had caused the war between them; and they slew great numbers. Many of the attacking force also were pelted with tiles from the roofs or in the narrow passages were crowded back by the multitude of their adversaries and cut down. Thus as many as fifty thousand persons perished during those days.
Edition :
Dio's Roman History. Cassius Dio Cocceianus. Earnest Cary. Herbert Baldwin Foster. William Heinemann, Harvard University Press. London; New York. 1914-.
Notes :
The attacking army also took some losses, described in: "Roof tiles are thrown at soldiers of Vespasian." and "Soldiers of Vespasian are surrounded in the narrow streets of Rome and killed."