I had been warranted as Corporal in charge of the _2nd Battalion Radio Detail_. You know, I suppose, that a regiment consists of two battalions, each battalion of three batteries, each battery of four guns and the complement of about 200 odd men necessary for their action, So my detail was responsible for coordinating the _eyes_, that is the airplanes and balloons of the three batteries in the second battalion, with the guns. Possibly you may wonder why it is necessary for airplanes to work with the batteries and here is the answer: the guns, or _pieces_ as they are called, were American 75’s, that is, the bore of the gun is 75 millimeters in diameter, and as the range they are fired over is seldom less than two miles some one must _spot_ the fire, that is see just where the shells hit around the target and then tell the gun crew so that they can point their guns more accurately, all of which is called _directing the fire_. Now an airplane can do this to perfection but there must be some kind of communication established between it and the battery, and this is where we came in with our wireless. I had five men in my detail, there being two operators and three _panelmen_ and of the latter and their work I will tell you later. Our regular performance each day was like this: The batteries would go out to the range in the morning, place their guns and set up their B. C. stations, that is, _Battery Commander_ stations where the Battery Commander would be located within a few feet of the pieces to work out any problems that might arise in aiming them. With the detail and accompanied by a second lieutenant, who was the officer in charge, we would arrive at the range a few minutes before one o’clock which was the time the batteries were scheduled to fire. The operators and the panelmen would get busy setting up the aerial wire system. This consisted of two jointed masts about fifteen feet high and each one of which was made in five sections. The masts would be set up about a hundred yards apart and a single aerial wire was stretched between them. The leading-in wire was then connected to a receiving set and the latter to the _ground_. This was formed of a pair of wires stretched on the ground directly under the aerial wire and to each of their free ends a copper mat was fixed with a little dirt thrown over it.