An Uncounted Toll and a Widened Holy War

This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.

No historian has produced a reconciled death toll for the Second Crusade. Individual episodes are documented separately, the failed siege of Damascus in July 1148 and the parallel campaigns fought the same year in Iberia and along the Baltic coast, but the losses recorded in each were never combined into a single casualty figure for the crusade as a whole, and this atlas records the toll as unknown rather than adopt an invented total.

What is well established is the scope the campaign claimed for itself. Bernard of Clairvaux preached the eastern expedition as a penitential act of Christian duty owed to the Latin East, but the same papal bull that called it folded the northern siege of Lisbon and campaigns against pagan Wends along the Baltic into the identical theological framework of indulgenced holy war, rather than treating them as separate or lesser undertakings. A crusade fought to relieve one city in the eastern Mediterranean was, by its own organizers' reckoning, simultaneously a war fought in Portugal and along the north German frontier, evidence of how elastic the crusading idea had already become barely fifty years after the First Crusade was first preached.