Conscription was limited at best. At the time of the Siege of Jerusalem, there were some 60,000 refugees wishing to flee that Saladin gave a paid passage to. So whilst some people from Europe, or local Christians may have swelled the city and hence had the potential to raise a militia force, it was not enough. At the siege of Acre, the crusaders amounted to 15,000 men, a small force compared to the typical army of 40,000 to 80,000 deployed by the Saracens. As a result, the Arabs had a seemingly unlimited supply of men, whilst the crusaders struggled to man their walls during the latter periods in the late thirteenth centuries.