Catinat had 50 battalions and as many squadrons of cavalry , some 40,000 men in total .
The commander of the siege force , Marshal Nicolas Catinat and his chief engineer Marshal Vauban had a strong working relationship and would cooperate seamlessly during the siege .
Marshal had 50 battalions and as many squadrons of cavalry , some 40,000 men in total .
The commander of the siege force , Marshal Nicolas Catinat and his chief engineer Marshal Vauban had a strong working relationship and would cooperate seamlessly during the siege .