Deus le volt!

Everyone who took part in the Crusade wore a cross sewn on to his outer garment - the first badge worn by an army in post-Classical times and the first step towards modern military uniforms; but whereas for the knights this cross was a symbol of Christian victory in a military expedition of limited duration, the poor thought rather of the sentence: 'Take up the Cross and follow me!' For them the Crusade was above all a collective imitato Christi, a mass sacrifice which was to be rewarded by a mass apotheosis at Jerusalem.

Norman Cohn, The Pursuit of the Millennium 64