Tacitus in describing a battle fought near Cremona between the armies of Vitellius and Vespasian, A.D. 69, writes: ‘The Vitellians at this time changed the position of their battering-engines, which in the beginning were placed in different parts of the field and could only play at random against the woods and hedges that sheltered the enemy. They were now moved to the Postumian way, and thence having an open space before them could discharge their missiles with good effect.’[31] [31] Tacitus continues: ‘The fifteenth legion had an engine of enormous size, which was played off with dreadful execution and discharged massy stones of a weight to crush whole ranks at once. Inevitable ruin must have followed if two soldiers had not signalised themselves by a brave exploit. Covering themselves with shields of the enemy which they found among the slain, they advanced undiscovered to the battering-engine and cut its ropes and springs. In this bold adventure they both perished and with them two names that deserved to be immortal.’ [Page 38] Froissart chronicles that at the siege of Thyn-l’Evêque, 1340, in the Low Countries, ‘John, Duke of Normandy had a great abundance of engines carted from Cambrai and Douai. Among others he had six very large ones which he placed before the fortress, and which day and night cast great stones which battered in the tops and roofs of the towers and of the rooms and halls, so much so that the men who defended the place took refuge in cellars and vaults.’ Camden records that the strength of the engines employed for throwing stones was incredibly great and that with the engines called mangonels[32] they used to throw millstones. Camden adds that when King John laid siege to Bedford Castle, there were on the east side of the castle two catapults battering the old tower, as also two upon the south side besides another on the north side which beat two breaches in the walls. [32] Catapults were often called mangons or mangonels, but in course of time the name mangonel was applied to any siege engine that projected stones or arrows. In this case the trebuchet is intended, as no catapult could project a millstone. The same authority asserts that when Henry III. was besieging Kenilworth Castle, the garrison had engines which cast stones of an extraordinary size, and that near the castle several balls of stone sixteen inches in diameter have been found which are supposed to have been thrown by engines with slings[33] in the time of the Barons’ war. [33] The engines here alluded to by Camden were trebuchets. Holinshed writes that ‘when Edward I. attacked Stirling Castle, he caused an engine of wood to be set up to batter the castle which shot stones of two or three hundredweight.’ (See allusion to this, p. 33.)