The 1640 siege of Turin was a major action in two distinct wars: the Franco-Spanish War (1635) and the Piedmontese Civil War. Thomas of Savoy and his supporters had seized the city of Turin in 1639, but French troops supporting the Regent Christine continued to hold the citadel. Under normal conditions in this period, it was not possible for a town to be held against a hostile citadel, but the anti-French forces managed to construct barricades...