History of the Gatling Gun Detachment, Fifth Army Corps, at Santiago / With a Few Unvarnished Truths Concerning that Expedition

by John H. Parker

Gatling Battery under Artillery Fire at El Poso.

A study of the science of tactics—not merely drill regulations, but tactics in the broader sense of maneuvering bodies of troops upon the battle-field—had led Lieut. Parker to the conclusion that the artillery arm of the service had been moved back upon the battle-field to ranges not less than 1500 yards. This not because of lack of courage on the part of the Artillery, but as an inherent defect in any arm of the service which depends upon draft to reach an effective position. It was not believed that animals could live at a shorter range in anything like open country. The problem of supporting an infantry charge by some sort of fire immediately became the great tactical problem of the battle-field. Admitting that the assault of a fortified position has become much more difficult than formerly, the necessity of artillery support, or its equivalent in some kind of fire, became correspondingly more important, while under the conditions it became doubly more difficult to bring up this support in the form of artillery fire.

The solution of this problem, then, was the principal difficulty of the modern battle-field; and yet, strange to say, the curtailed usefulness of artillery does not seem to have suggested itself to anybody else in the service previous to the first day of July. This problem had been made the subject of special study by him for several years, and had led to the conclusion that some form of machine gun must be adopted to take the place of artillery from 1500 yards down. This in turn led to the study of machine guns. The different forms in use in the different armies of the world had been considered, and it was found that there was none in any service properly mounted for the particular use desired. All of them required the service of animals as pack-mules, or for draft, while the very conditions of the problem required a gun to be so mounted that the use of animals could be dispensed with.

The Maxim gun has been reduced in weight to about 60 pounds, and is furnished with a tripod weighing about the same; but this is too heavy, and the supply of ammunition at once becomes a critical question. The Colt’s automatic rapid-fire gun has been reduced to 40 pounds, with a tripod of equal weight, but here again the same difficulty presents itself. The soldier is capable of carrying only a limited amount of weight; and with his already too heavy pack, his three days’ rations, together with the heat, fatigue and excitement of battle, it did not appear possible for any tripod-mounted gun to be effectively used.

The problem therefore resolved itself into the question of carriages: A carriage capable of carrying any form of machine gun using small-caliber ammunition, capable of being moved anywhere by draft, capable of being dismantled and carried on a pack-mule, and, above, all, capable of being moved by hand; required also some device for getting the requisite amount of ammunition up to the firing-line. A carriage and ammunition cart was invented fulfilling all these conditions and the invention was presented to the adjutant-general of the army for consideration, accompanied by a discussion of the proper tactical use of the gun so mounted. This discussion, in part, was as follows:

“It is claimed for this carriage that a machine gun mounted on it can be carried with a firing-line of infantry on the offensive, over almost any kind of ground, into the decisive zone of rifle fire and to the lodgment in the enemy’s line, if one is made.

“On broken ground the piece can be moved forward by draft under cover of sheltering features of the terrain to a position so near the enemy that, under cover of its fire, an infantry line can effect a lodgment, after which the piece can be rushed forward by a sudden dash.

“The machine gun, mounted on this carriage, is especially adapted for service with the reserve of a battalion on the offensive, acting either alone or in regiment. Its use will enable the commander to reduce the reserve, thereby increasing the strength of the fighting-line, and yet his flanks will be better protected than formerly, while he will still have a more powerful reserve. If the fighting-line be driven back, the machine guns will establish a point of resistance on which the line can rally, and from which it can not be driven, unless the machine guns be annihilated by artillery fire.

“In case of counter-charge by the enemy, the superior weight and intensity of its fire will shake the enemy and so demoralize him that, in all probability, a return counter-charge will result in his complete discomfiture.