The demons feel confident that, granted better arms, they could secure the advantage, so, when one of their number suggests the manufacture of cannon, all gladly welcome the idea.

Under Satan's direction some of the evil angels draw from the ground metal, which, molten and poured into moulds, furnishes the engines of destruction they are seeking.

Meanwhile others collect ingredients for ammunition, and, when morning dawns, they have a number of weapons ready for use, which they cunningly conceal in the centre of their fourfold phalanx as they advance.
In the midst of the second encounter, Satan's squadrons suddenly draw aside to let these cannons belch forth the destruction with which they are charged, an unexpected broadside which fells the good angels by thousands; but, although hosts of them are thus laid low, others spring forward to take their place.

On seeing the havoc wrought by their guns, Satan and his host openly rejoice; but the good angels, perceiving arms are useless against this artillery, throw them away, and, picking up the hills, hurl them at their opponents, whom they bury beneath the weight of mountains.

In fact, had not the Almighty checked this outburst of righteous anger, the fiends would doubtless have been buried so deep they never would have been able to reappear! On the third day the Almighty proclaims that, as both forces are equal in strength, the fighting will never end unless he interferes.