New Field of Action. — Promotion. — Guerrilla Warfare. — Characteristics. — Tendencies. — Captain J.H. Morgan. — Character. — Personal Appearance. — Anecdotes. — Success. — Southern Cavalry superior to Northern. — Advantages. — Riding Courier. — General Johnson evacuates Bowling Green. — Excitement in Nashville. — Preparations for Defence. — Commissary Stores. — Vandalism. — Rear Guard. — Line of Retreat. — Dreadful Hardships. — Losses. — Forced March. — Desolation. — Cause of Retreat. — Other Counsel. — Accident. — No Union Feeling evident. — Intolerant yet Sincere.

While at Nashville, recovering from the typhoid pneumonia, I resolved to seek a transfer to the cavalry service, as affording me a new field of observation, and perhaps a more stirring and exciting life. As Captain F——s was recruiting a company in and around Nashville, I rode with him from day to day over the country, and thus secured his advocacy of my wishes. On the 4th of February, 1862, I was transferred to his company, and entered it as orderly sergeant, and a vacancy soon occurring, I was promoted to a lieutenancy, Our company was to have been attached to a battalion commanded by Major Howard of Maryland, formerly of the United States army, and as my captain was in service on General Hardee's staff, I acted as captain during the whole of my term in this branch of the service. Shortly after, my company was attached to the command of that celebrated guerrilla leader, Captain J.H. Morgan, at that time, however, acting under the rules of regular warfare, and not, as now, in the capacity of a highway robber.

The system of guerrilla warfare has been indorsed by an act of the Confederate Congress, and is fully inaugurated over a large part of the South. As there practiced now, it is distinguished from regular warfare by two things: First, the troops are not under any brigade commander, but operate in small bands, much at their pleasure, with a general responsibility to the major-general commanding in their department.

One result of this feature of the system is to develop a large amount of talent in the ranks, as every man has an individual responsibility, and constant opportunities to test his shrewdness and daring. It also gives a perfect knowledge of all roads and localities to the whole force in a given section, as some one or more soldiers will be found in each gang, who, in their frequent maraudings, have traversed every by-path and marked every important point.

The second prominent characteristic of guerrilla warfare, is the license it gives to take by force from supposed enemies or neutrals, horses, cash, munitions of war, and, in short, any thing which can aid the party for which he fights; with the promise of full pay for whatever he brings off to his head-quarters. This is the essential principle of the system, giving it its power and destructiveness. As it displaces patriotism from the breast of the fighter, and substitutes in its room the desire for plunder, the men thus engaged become highway robbers in organized and authorized bands. Nor do guerrilla bands long confine their depredations to known enemies. Wherever a good horse can be found, wherever silver plate is supposed to be secreted, wherever money might be expected, there they concentrate and rob without inquiry as to the character of the owner. Hence the system is destructive to all confidence, and to the safety of even innocent and defenseless females.

It requires no prophet's ken to foresee that the Confederate authorities have commenced a system which will utterly demoralize all engaged in it; destroy the peace, and endanger the safety of non-combatants, and eventually reduce to ruin and anarchy the whole community over which these bands of robbers have their range.

This process has already commenced, and if the loyal troops were withdrawn to-day from all Secessia, and the South allowed its independence, the people would find themselves in the hands of bandits to harass and plunder for months to come, and would have long scores of wrongs to right, which have been inflicted upon neutrals and friends of the Rebellion by its professed soldiers. Should the contest continue for two or three years longer, the South bids fair to lapse into the semi-barbarism of Mexico, or the robber-ruled anarchy of Spain after the Peninsular war. The legitimate tendency of the system is understood by the Southern generals, and some of them resisted its introduction; but the desperation of the whole Southern mind swept away opposition, and they are now embarked on a stormy sea, which will assuredly wreck the craft, if it be not sooner sunk by loyal broadsides.

How the government should treat these free-booters when captured, as some of them have been, is plain, if the usual laws of war are to be followed; they are to be punished as outlaws, and hung or shot. But, in this case, can it be done safely? There were, when I left Secessia, not less than 10,000 men organized as guerrillas. There may be far more at this writing. Is it possible to treat such a number as banditti, without inaugurating a more bloody retaliation and massacre than the world has ever seen? I only raise the question.

Morgan, as a citizen in times of peace, maintained the reputation of a generous, genial, jolly, horse-loving, and horse-racing Kentuckian. He went into the Rebellion con amore, and pursues it with high enjoyment. He is about thirty-five years of age, six feet in hight, well made for strength and agility, and is perfectly master of himself; has a light complexion, sandy hair, and generally wears a mustache, and a little beard on his chin. His eyes are keen, bluish gray in color, and when at rest, have a sleepy look, but he sees every one and every thing around him, although apparently unobservant. He is an admirable horseman, and a good shot. As a leader of a battalion of cavalry, he has no superior in the Rebel ranks. His command of his men is supreme. While they admire his generosity and manliness, sharing with them all the hardships of the field, they fear his more than Napoleonic severity for any departure from enjoined duty. His men narrate of him this—that upon one occasion, when engaging in a battle, he directed one of his troopers to perform a hazardous mission in the face of the enemy. The man did not move. Morgan asked, in short quick words,

"Do you understand my orders?"