September 20.— I am ordered to the place of judge-advocate and to be attached to headquarters. I dislike the service but must obey, of course. I hope to be released after a few weeks’ service. In the meantime I will try to qualify myself for an efficient discharge of my new duties. I agree with General Rosecrans that courts-martial may be made very serviceable in promoting discipline in the army. I shall try to introduce method and system into the department. I will keep a record of cases, collect a list of sentences proper for different cases, etc., etc.