The history of Plan Calcul―France's first information technology program, launched by de Gaulle's government in 1966―has been well described in the literature; however, few studies investigate the arsenal system of the program in depth. Drawing from Plan Calcul's archives, this article is the first to demonstrate that, in the context of de Gaulle's Cold War foreign policy, the French government, initially aiming to avoid an arsenal system, still became the program's funding supplier, entrepreneur, and client. Plan Calcul aimed to establish an industrial-type operation but was ultimately reduced to a state information technology arsenal program.