Page:Southern Historical Society Papers volume 16.djvu/100

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94 Southern Historical Society Papers.

gard, was one of the officers who had been detailed by the Secretary of War (United States) to test and report upon the signal system of Dr. (Brigadier-General) Myer, and was consequently completely master of the system. He organized it efficiently, and thoroughly instructed a number of men selected from the ranks for their intelli- gence and good character. Most of these men afterwards became commissioned officers in the Signal Corps.

The service was in full operation at the time of the first conflict at Bull Run, and the third shot from Ayres' battery in front of Stone Bridge went through one of Alexander's signal tents, in front of which the flags were being actively plied.

General Alexander, in reply to a letter asking for information re- specting the services rendered by the signal men under his direction, writes as follows: " Perhaps the most important service rendered by the Signal Department in the first year of the war was at the battle of Bull Run, and was in a great measure accidental. Very early in the morning of the 2ist, I was on the hill by Wilcox's House, in rear of our right, and watching the flag of our station at the Stone Bridge, when, in the distant edge of the field of view of my glass, a gleam caught my eye. It was the reflection of the sun (which was low in the east bthind me) from a polished brass field-piece, one of Ayres' battery, and observing attentively, I discovered McDowell's columns in the open fields, north of Sudley's Ford, crossing Bull Run and turning our left flank, fully eight miles away, I think, but you can look at the map from where I was. I signalled Evans at once, ' Look out for your left, your position is turned.' Just as he got my message his pickets made their first report to him of cavalry driving them from Sudley's Ford. At the same time I sent a message of what I had seen to Johnston and Beauregard, who were at Mitchell's Ford, on receipt of which (see Johnston's report) Bee, Hampton and Stonewall Jackson were all hurried in that direction, and the history of the battle tells how they successfully delayed McDowell's pro- gress, till finally the tide was turned by troops arriving in the after- noon.

" The rocket incident referred to I had almost forgotten. It was only that one night, on reports, that rockets were seen in the enemy's lines by our stations, that they were ordered by General Beauregard to send up rockets themselves. It was done simultaneously at many distant points, and in such a manner as to appear to indicate some im- portant and general movement ; and from what appeared afterwards in Northern papers, it seemed that McClellan had something on foot