I was reading Tacitus' Histories recently (an account of the civil war of 69 AD, also known as 'the year of the four emperors') and came across some passages which may have given CA the idea for the Rome II throwing torches. At the very least they suggest there may have been a grain of history in the much-derided feature.
In the first passage they have an effect not dissimilar to in the game: heavy casualties on the attacker's side. They are used as an offensive force thrown at the defenders of the city of Placentia. It is in the middle of the civil war when the emperor Otho's forces are besieged by one of the armies of the rebel Vitellius. (underlined parts my emphasis)
(from Tacitus, Histories 2.21):
'However, the first day's action was carried out impulsively rather than in a manner that showed the skilled techniques of a veteran army. The enemy, unprotected and careless, approached the walls after a heavy session of eating and drinking. It was during this fighting that a most splendid amphitheatre, located outside the walls, went up in flames. Perhaps it was set on fire by the besiegers while they were hurling torches, slingshots and incendiary missiles at the besieged, or else it was set alight by the blockaded men because they were hurling fire in return [...] In any case, Caecina was repulsed with serious casualties, and the night was spent preparing siege equipment.'
As in Rome II, it is more sensible to wait a while and prepare siege engines.
This method of attack is shown in a bad light, the commander feeling humiliated by his use of poor tactics. So, just like in Rome 2, it is a possible course of action, although not nearly as good as siege equipment. The battle ends in a way familiar to most who have fought off an AI siege in the game:
'The Vitellians retreated and the party's reputation was shattered. Caecina, who was ashamed of his reckless and ill-considered attack, and afraid of looking ridiculous and useless if he stayed put in the same camp, crossed the Po and made for Cremona.'
Later in the war, some relatives and supporters of Vespasian, who has rebelled against the new emperor Vitellius, are under siege on the Capitoline Hill in Rome (the Capitol), and Tacitus explicitly says the attackers throw flaming torches and by this method burn down the gates.
(from Tacitus, Histories 3.71):
'Passing in a swift column the Forum and the temples overlooking the Forum, they charged up the hill opposite until they reached the lowest gates of the Capitoline citadel. There was a series of colonnades built long ago at the side of the slope on the right as you go up. Coming out onto the roof of these, the besieged showered the Vitellians with rocks and roof-tiles. These attackers were armed only with swords, and it seemed tedious to summon catapults and missiles. So they hurled torches into a projecting colonnade and followed the path of the fire. They would have broken through the burnt gates of the capitol, had not Sabinus torn down statues everywhere (the adornment of our ancestors) and built a sort of barrier on the very threshold. They then attacked the Capitol by two different routes...'
Finally when Vespasian's men storm the city of Rome and attack the last Vitellian troops in the Praetorian Guard's fortified camp (the Castra Praetoria), they use torches among other siege techniques to storm it.
(from Tacitus, Histories 3.84):
'The storming of the Praetorian camp involved the heaviest fighting, since it was held by the most determined Vitellians who saw it as their last hope. This spurred on the victors all the more, particularly the ex-praetorians, and they simultaneously deployed all the resources ever designed to storm the most powerful cities - the testudo, artillery, earthworks and firebrands - and shouted out again and again that this operation was the climax of all the toil and danger they had endured in so many battles.'
Does any of this affect what you think of the inclusion of torches in the game, or at least partly explain why CA made this very unpopular decision?
P.S. Since this is a direct discussion of the game as well as the history, I didn't put the thread in the historical discussion section but if a moderator thinks it would be better served there, I don't mind if it is moved.