The premise of God’s Battalions is that everything you think you know about the Crusades is simply wrong. No, the Crusades were not an act of Christian aggression against the Muslims. The Crusades were, in fact, a belated response to centuries of Muslim aggression against Christendom. No, the Crusaders were not ignorant barbarians attacking a far more civilized enemy. The supposed golden age of Islam was not as much a high point of learning, as is generally supposed, especially since most of the learning was the work of non-Muslims. On the other hand, Europe, even during the so-called Dark Ages, was already beginning to pull ahead in practical technology. Anyway, as Stark points out, the concept of the Dark Ages is not particularly accurate and historians have largely abandoned it.
Yes, the Crusaders did sack Jerusalem. This was standard practice against cities that resisted a siege. In any case, Muslim atrocities exceeded Christian. No, the Crusaders did not slaughter Jews on the way to the Holy Land. German peasants did that. The Crusaders were forbidden by the Pope to harm Jews and many times bishops protected the Jews from the mobs.
Stark makes a strong case for the Crusades. They were, as I have said, a reaction to aggression. The Crusaders acted, for the most part, from the highest of motives. They did not expect to get rich from their endeavors. Many Crusaders went bankrupt. They truly believed they were God’s battalions.
We, their descendants, have nothing to apologize for. Indeed, we should be proud of the men who marched across half the world, and won stunning victories against a foe who vastly outnumbered them. Their deeds were glorious.
I did take issue with his description of the Byzantines as treacherous. The Byzantines had no reason to trust these armies who were marching across their territory, especially since their leaders included some of Byzantium’s deadliest enemies. The sack of Constantinople cannot be as easily defended as Stark does. It may have been standard practice and the Angeli emperors bore most of the responsibility for the events, nevertheless, it was a crime, it that Byzantium was permanently weakened and it tended to discredit future crusades.
Overall, God’s Battalions is a noble work and well worth reading.