The ensemble of institutions, measures and procedures which constituted it was codified in a decree of 14 Frimaire (4 December) which set the seal on what had been the gradual development of centralized dictatorship founded on the Terror. In the center was the Convention, whose secular arm was the Committee of Public Safety, vested with immense powers: it interpreted the Convention's decrees and settled their methods of application; under its immediate authority it had all state bodies and all civil servants (even ministers would disappear in April 1794); it directed military and diplomatic activity, appointed generals and members of other committees, subject to ratification by the Convention. It held responsibility for conducting war, public order and the provisioning of the population. The Commune of Paris, a famous "sans-culotte" bastion, was neutralized by coming under its control.