It is often assumed, especially in the Anglo-American literature, that Frederick William I (1713–40), by establishing the “canton System” in 1733, lessened his need to rely on foreign mercenaries for military manpower and moved in the direction of a national, conscript army. As put by Robert Ergang: “The establishment of this so-called ‘canton system’ not only assured… a large permanent supply of recruits; it was also a long step toward making the Prussian army a national one. Recruiting abroad was still continued, but it was only supplementary. Native recruits now formed the backbone of the Prussian army.” This persistent assumption, stated in different ways by different authors, has even penetrated the textbook literature. A closely related assumption holds that Frederick the Great after 1740, by increasing the proportion of foreign manpower to as much as two-thirds of the total, “reversed” the trend toward making the army more national in character. The purpose of this essay will be to demonstrate that both of the above-mentioned assumptions are false; they depend on a misunderstanding of the real trends in Prussian recruiting bolstered, in the latter case, by faulty statistics.