The two Kasernes were identical in structure, but the fact that the near end of Kaserne A was sacred to the Kommandantur and the far end of Kaserne B was set apart for orderlies gave rise to some more or less improvised alterations in the internal structure. Here it should be mentioned that “near end” means nearest to the main gate. As you walked in through the main gate the Kommandantur lay immediately on your left, the sentries off duty sniggered at you from the guard-room on your right, and the officers’ enclosure through another (inner) gate directly faced you. The portion of Kaserne A set apart for the English was that part which was beyond the inner gate. The windows of the nearest room to the gate on the ground floor were whitewashed in order that we might not read—and thereby be in a position to copy—the permit cards which it was necessary for every German, military or civilian, to show the sentry on duty before being permitted to pass in or out of the prisoners’ enclosure. This regulation was a safeguard introduced after the original escapes, and it used to afford some amusement. On one occasion a sentry, having been duly cautioned as to his orders, let Niemeyer himself through without asking him for his card. The result was an intensification of the air in the neighbourhood for a good five minutes, and loud sounds of merriment from the British quarter. Next day the fellow, on his metal, stopped Niemeyer—in a hurry. The sentry said very little, Niemeyer said a very great deal; the consequence was that the sentry got seven days for his pains, and the world—meaning the British quarter—again cooed with merriment. But that is by the way. Going straight on down the main cobble-stoned thoroughfare of the camp, you reach Kaserne B, about 70 yards apart from Kaserne A. [Illustration: Kaserne B. ] Kaserne B was a 50-yard long, ugly, four-storied affair, with an entrance doorway and a flight of stairs at each end of it. From each entrance doorway a few steps _downward_ brought you through another door to the basement corridor—(the distinction between these doors should be kept clear in mind). On the outer side of this basement corridor, i.e. looking towards the uncommunicative outer wire of the camp, were the punishment cells; on the inner side were the various cellars—the tin cellar, the bread cellar, the store cellar, the potato cellar, and other cellars necessary for the economic administration of the camp. Half way down the basement corridor, and shutting off the British from any possibility of prying into the cellars at its far end, was a partition consisting of two doors usually locked.