Quick to take up a new interest, and as quick to throw it aside, one day when the Secretary of War, Mr. Stanton, found Tad fussing around his office, Mr. Stanton, just for the fun of it, commissioned Tad a lieutenant of the United States Volunteers; this excited Tad so greatly that he hurried off and on his own responsibility ordered a quantity of muskets sent up to the White House at once, and then gathered together the house-servants and gardeners, and organised them into a company, drilled them for service, and then actually dismissed the regular sentries on the premises, and ordered his new recruits on duty as guards. Robert Lincoln, who was then at home, having discovered Tad's scheme, thought that the men who had been at work all day, ought to be free at night, and told Tad so, but Tad would not listen to him, so Robert appealed the case to his father, who only laughed, as he generally did at Tad's pranks, thought the whole thing a good joke, and gave no orders to the refractory young lieutenant. Tad, however, soon grew tired of being on watch himself, and went to bed, when his recruits were quietly relieved from duty, and there was no guard over the President's house that night. While he sported his commission as lieutenant Tad looked the part, having from some source got a uniform suitable for the occasion, and in that proud costume he had himself photographed to the great delight of his admiring circle of friends. Tad's tenth birthday was celebrated by a visit which he made with his father and a party of friends to the Army of the Potomac, which was then encamped on the banks of the Rappahannock, opposite Fredericksburg, the visit being made because the President thought a glimpse of the Nation's Chief Executive might put fresh courage into the weary soldiers. The visit was five days long and a more restless member of a party than Tad was, cannot be imagined. By the end of the first day he had exhausted all the resources of the encampment, and begged to go home, but there were any number of reviews and parades for which the President was obliged to stay, and these somewhat diverted Tad, for a handsome young soldier was detailed as the boy's special escort, and a little grey horse consoled him partially for the beloved pony left at home. It is said that those reviews and the part Tad played in them will never be forgotten by the men who saw or took part in them, and this is the way they have been described.