In the Century Magazine for September, 1887 (page 774), there is given an illustration ("from a photograph") of an armour-clad car described as "the Union Railroad Battery" which was, apparently, used in connection with the springing of the mine in front of Petersburg on July 30, 1864. The car is shown to have consisted of a low truck with, at one end, a sloping armour plate coming down almost to the rails, and having a hole through which the gun placed behind it on the truck could be fired. The sides of the truck were protected from the top of the sloping armour downwards, but the back was open. The car was, of course, designed to be pushed in front of the locomotive.

Mr. L. Lodian, also, contributed to the issue of the American periodical, Railway and Locomotive Engineering, for May, 1915, a communication, under the title of "The Origin of Armoured Railroad Cars Unquestionably the Product of the American Civil War," in which, claiming that "our own Civil War" originated those cars, he said:—

Attached is a picture of one in use on the old Philadelphia-Baltimore Railroad. The illustration appeared in Frank Leslie's illustrated periodical on May 18, 1864. No better proof could be furnished of the authenticity of the fact that such a car was in use at that time.... There appears to be no great variation even to-day in armoured car design from the initial effort of half a century ago. Pictures are appearing in numerous periodicals, at the period of writing, of those in use by the European belligerents, and in general appearance and outline they are about the same as the original, the chief variation in their use being that the war-going locomotive is also sheathed in armour, whereas that in use in the sixties was entirely unprotected, except in front, and then only by reason of the mailclad car being placed in front to do the fighting.

As against this suggestion, there is the undoubted fact that in the American Civil War the plan was adopted of having the locomotives of ordinary troop or supply trains protected by armour-plating as a precaution against attack when there was no armoured car in front of them. Writing to the Director of Military Railroads on October 8, 1862, Haupt said:—

I have been thinking over the subject of locomotives. It is one which, at the present time, and in view of the future requirements of the service, demands especial attention. Experience has shown that on engines men are targets for the enemy; the cabs where they are usually seated have been riddled by bullets, and they have only escaped by lying on the footboard. It will be necessary to inspire confidence in our men by placing iron cabins (bullet proof) upon all or nearly all our engines, and the necessity will increase as we penetrate further into the enemy's country.

Again, it is desirable that the smaller and more delicate portions of the apparatus should be better protected than at present, and I would be pleased if you would give to the plans, of which I spoke to you recently, a careful consideration. It seems to me that they are peculiarly well adapted to military service.

Haupt adds that "protected locomotives and bullet-proof cabs were soon after provided, as recommended"; and elsewhere in his "Reminiscences" he says, on the same subject:—

The bullet-proof cabs on locomotives were very useful—in fact, indispensable. I had a number of them made and put on engines, and they afforded protection to engineers and firemen against the fire from guerillas from the bushes that lined the road.

In the Franco-Prussian War of 1870-71 guns mounted on four armour-plated trucks, fitted up in the workshops of the Orléans Company, under the supervision of M. Dupuy de Lorme, Engineer-in-Chief for Naval Construction, were taken into action on four occasions during the siege of Paris, namely, at Choisy-le-Roi, for the sortie preceding the one from Champigny; near Brie-sur-Marne, to support the Champigny sortie; at Le Bourget, for one of the attempts to recapture that position; and at La Malmaison, to support the Montretout sortie. The wagons were protected by a covering which consisted of five plates of wrought iron, each two-fifths of an inch thick, and giving, therefore, a total thickness of two inches. The two engines used were also protected by armour-plating. One or two of the wagons were struck by field-gun shells without, however, sustaining further damage than the denting of their plates. The engines escaped damage altogether. On going into action the armoured wagons were followed by another bullet-proof engine conveying a party of men with tools and materials to repair any interruption of the lines that might interfere with the return of the trains; but the only damage done was so slight that it was remedied in about a quarter of an hour.[14]

Further use was made of armoured trains in the Egyptian Campaign of 1882. One that was put together to assist in the defensive works at Alexandria is declared in the official history of the campaign[15] to have "proved most serviceable." Two of the trucks, fitted with iron plating and sand bags as a protecting cover, carried one Nordenfelt and two Gatling guns. A 9-pr. was also placed on one of the trucks, together with a crane by means of which it could be lowered out immediately. Other trucks, rendered bullet proof by sand bags and boiler-plating, and carrying a force of 200 bluejackets, with small arms, completed the fighting force. On July 28, the train took part in a reconnaissance sent out to ascertain the extent of the damage which had been done to the railway lines near Arabi's outpost. Shots were fired at the train by the enemy, but without effect. The reconnaissance was a complete success inasmuch as it enabled such repairs to be done to the railway as gave the use of a second line between Ramleh and Alexandria.