One time when he came he found that his father's house was overrun with mice. This was too good a chance to miss. He and one of his brothers caught all the mice they could, carried them to the house of the commandant of the garrison, which was opposite to theirs, gently opened the door, and let the mice loose in their new home. Once, with the screw-firing cross-bows that the workmen at the Arsenal had made for them, the wild Gordon boys broke twenty-seven panes of glass in one of the large warehouses of the Arsenal. A captain who was in the room narrowly escaped being shot, one of the screws passing close to his head and fixing itself into the wall as if it had been placed there by a screwdriver. Freddy, the youngest of the five boys, had an anxious, if merry, time when his big brothers came back from school. With them he would ring the doorbells of houses till the angry servants of Woolwich seemed for ever to be opening doors to invisible ringers. Often, too, little Freddy would be pushed into a house, the bell rung by his mischievous brothers, and the door held, so that Freddy alone had to face the surprised people inside. But the wildest of their tricks was one that they played on the cadets at Woolwich--the big boys who were being trained to be officers of artillery. "The Pussies" was the name they went by, and it was on the most grown up of the Pussies that they directed their mischief. The senior class of cadets was then stationed in the Royal Arsenal, in front of which were earthworks on which they learned how to defend and fortify places in time of war. All the ins and outs of these earthworks were known to Charlie Gordon and his brothers. One dark night, when a colonel was lecturing to the cadets, a crash as of a fearful explosion was heard. The cadets, thinking that every pane of glass in the lecture hall was broken, rushed out like bees from a hive. They soon saw that the terrific noise had been made by round shot being thrown at the windows, and well they knew that Charlie Gordon was sure to be at the bottom of the trick. But the night was dark, and Charlie knew every passage of the earthworks better than any big cadet there. Although there were many big boys as hounds and only two little boys as hares, the Gordons easily escaped from the angry cadets. For some time afterwards they carefully kept away from the Arsenal, for they knew that if the "Pussies" should catch them they need expect no mercy. From Taunton Charlie went for one year to be coached for the army at a school at Shooters Hill. From there, when he was not quite sixteen, he passed into the Royal Military Academy at Woolwich.