The remains of Dutch East India Company (VOC) forts are scattered throughout littoral Asia and Africa. But how important were the specific characteristics of European bastion-trace fortifications in enabling early modern European expansion? The Company Fortress takes on this question by studying the system of fortifications built and maintained by the Dutch East India Company in present-day India and Sri Lanka. Remaining fortifications in places like Kannur, Sadras, Jaffna and Galle give an impression of the size and complexity of these works, but cities like Kochi, Nagapattinam and Colombo were also fortified by the Dutch company. The book uncovers the stories of the fortifications and their designers, arguing that many of those responsible for building these forts were in fact amateurs and their creations contained serious flaws, to the bewilderment of later engineers tasked with improving them.