So little is known by civilians of the nature and appearance of armoured trains, which played so prominent a part in the war, that a rough sketch of the "altogether" of one of these ungainly and diabolical machines may here be given. Armoured trains are hastily-constructed affairs, consisting of a locomotive and a few waggons, the engine generally being located about the middle of the train. The waggons and locomotive are covered by boiler-plating three-quarters of an inch thick, as firmly riveted as time will allow. One of these trains was constructed at Mafeking, where there are several railway shops, the town being on the new main line from the Cape to Buluwayo. The locomotive is the only part of the train that does not carry guns, the steel casing being solely to protect the mechanism of the engine from the shot of the enemy. The remainder of the armour is thickly perforated with portholes, through which guns of varying calibre peep, the Maxim, Nordenfeldt, and Gatling being the most serviceable weapons for this kind of work. The smaller holes are for the rifles of the marksmen, and usually the deadliest shots in a regiment are, when possible, selected for the position. It takes an expert marksman to shoot with satisfactory results from a quickly-moving train. Usually an armoured train is also supplied with a powerful searchlight, in view of a possible night attack. Of course, the boiler tubing can offer no resistance to artillery. In fact, rifle shots fired at short range will sometimes penetrate the plates, and to meet such a possibility sand-bags are often provided, as was the case in the Egyptian campaign, when the Sirdar found the armoured train of great service. The man in command of an armoured train thinks first, when an emergency arises, of his engine. So long as that remains in workable condition the odds are on his side; but once the vital parts of the locomotive are damaged, the outlook becomes serious, for an armoured train can only carry a small body of men, who would be quickly surrounded by the enemy, who might number hundreds or thousands. The chances are that an armoured train could not be damaged to such an extent unless artillery, dynamite, or some equally destructive force were used. A machine of this kind, but of third-rate pretensions, was now continually used by the troops at Frere for the purpose of discovering the whereabouts of the enemy, and on the 15th of November an exciting and disastrous voyage was made in the "death-trap," as it was called. The troops had orders to proceed from Estcourt to Frere, and beyond if possible, to ascertain how far the line was practicable for the passage of an army.