After Napoleon Bonaparte conquered Prussia in 1806, one of the conditions of peace was that Prussia should reduce its army to no more than 42,000 men. In order that the country should not again be so easily conquered, the King of Prussia enrolled the permitted number of men for one year, trained and then dismissed that group, and enrolled another of the same size, and so on. Thus, in the course of ten years, he was able to gather an army of 420,000 men who had at least one year of military training. The officers of the army were drawn almost entirely from among the land-owning nobility. The result was that there was gradually built up a large class of professional officers on the one hand, and a much larger class, the rank and file of the army, on the other. These enlisted men had become conditioned to obey implicitly all the commands of the officers, creating a class-based culture of deference.