The rule which required proofs of nobility as a prerequisite to obtaining a commission was not severely enforced in the reign of Louis XV., and in the earlier years of his successor. In many regiments it was usual to promote one or two deserving sergeants every year. In others the necessary certificate of birth could be signed by any nobleman and was often obtained from greed or good-nature. Moreover, an order of 1750 had provided that officers of plebeian extraction should sometimes be ennobled for distinguished services. But in 1781, a new rule was established. No one could thenceforth receive a commission as second lieutenant who could not show four generations of nobility on his father's side, counting himself. Thus were all members of families recently ennobled excluded from the service, and no door was left open to the military ambition of people belonging to the middle class; although that class was yearly increasing in importance. Moreover, strict genealogical proofs were required, the candidate for a commission having to submit his papers to the royal herald. Exceptions were made in favor of the sons of members of the military order of Saint Louis. [Footnote: Ségur, i. 82, 158. Chérest, i. 14. Anciennes lois françaises, 22d May, 1781. The regiments to which the regulation applies are those of French infantry (not foreign regiments), cavalry, light horse, dragoons, and chasseurs à cheval. This would seem to exclude the artillery and engineers. The foreign regiments appear to have been included in a later order. Chérest, i. 24.]