Complex sentence: The Egyptian Republican Guard, however, doesn't recruit directly, unlike its Syrian, Yemeni, and (former) Iraqi counterparts, the bulk of its troops are recruited from other units, mainly on the basis of performance and advanced training in urban warfare.
Split into simpler sentences: The Egyptian Republican Guard, however, doesn't recruit directly, unlike its Syrian, Yemeni, and (former) Iraqi counterparts. The bulk of its troops are recruited from other units, mainly on the basis of performance and advanced training in urban warfare.