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In page Catharism:

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The remainder of the first of the two Cathar wars now focused on Simon de Monfort's attempt to hold on to his gains through the winters. With a small force of confederates operating from the main winter camp at Fanjeaux, he was faced with the desertion of local lords who had sworn fealty to him out of necessity—and attempts to enlarge his newfound domain during the summer. His forces were then greatly augmented by reinforcements from northern France, Germany, and elsewhere.[citation needed]