Supplementary commands are oral orders that reinforce and complement the main order. They ensure proper understanding and execution of a movement. A supplementary command may be a preparatory command, a portion of a preparatory command, or a two-part command. It is normally given between the preparatory command and the execution command. For example, when beginning a one-step sparring sequence, give the preparatory command “Ready!” and then state which student will initiate the attack before giving the execution command.