Within a few days I also sent out other scouts, singly and in pairs, on the different routes that had been carefully prepared for them, and in a short time quite a number of my best operatives were engaged upon more or less difficult and dangerous tasks, all tending to the same end.

In organizing and controlling this secret service, I endeavored to conceal my own individual identity so far as my friends and the public were concerned. The new field of usefulness into which I had ventured was designed to be a secret one in every respect, and for obvious reasons I was induced to lay aside the name of Allan Pinkerton—a name so well known that it had grown to be a sort of synonym for detective. I accordingly adopted the less suggestive one of E. J. Allen; a nom de guerre which I retained during the entire period of my connection with the war. This precautionary measure was first proposed by the General himself, and in assenting to it I carried out his views as well as my own. This ruse to conceal my identity was a successful one. My true name was known only to General McClellan, and those of my force who were in my employ before the breaking out of the rebellion, and by them it was sacredly kept. Indeed, I doubt if McClellan has ever divulged it to this day, if I may judge by the frequent occurrence of such incidents as the following:

A short time since, while on a visit to my New York agency, I chanced to meet one of my old army friends, General Fitz-John Porter. He recognized me, gave me a hearty greeting, and proceeded to address me as Major Allen, after the custom of by-gone days. I permitted the conversation to go on for some time, and then said:

"Are you not aware, General, that the name of E. J. Allen, which I used during the war, was a fictitious one?"

He looked at me, as if to satisfy himself that I was not jesting, and then exclaimed:

"Fictitious! You are not in earnest, Major?"

I assured him that I was never more so.

"Why, I never suspected such a thing. What, then, is your true name?"

"Allan Pinkerton," I replied.

"Allan Pinkerton!" he ejaculated.