Two years later he was made first lieutenant, and sent to Oregon as escort to an expedition surveying for a branch of the Pacific Railway. The region was wild and almost unknown, yet beautiful and full of interest. This life must have seemed inspiring compared with the quiet of the Somerset store.
Chosen very soon to take charge of an Indian campaign, his fearlessness, his quick decision and cautiousness as well, made him a valuable leader. The Indians could endure hardships; so could Sheridan. Sometimes he carried his food for two weeks in his blanket, slung over his shoulder, and made the ground his bed at night. The Indians could scale rocks and mountains; so could the young officer.
A severe encounter took place at the Cascades, on the Columbia River, April 28, 1856, where, by getting in the rear of the Indians, he completely vanquished them. For this strategy, he was especially commended by Lieutenant-General Scott. However, he won the confidence of the Indian tribes for probity and honesty in his dealings with them.
When the Civil War began, he was eager to help the cause of the Union, and in 1861 was made captain and chief quartermaster in south-western Missouri, on the staff of Major-General Curtis. He was quiet and unassuming, accurate in business matters, and thoroughly courteous. Perhaps now that he had learned more of army life by nine and a half years of service, he was less sanguine of high renown than in his boyish days; for he told a friend that "he was the sixty-fourth captain on the list, and with the chances of war, thought he might soon be major."
It required executive ability to provide for the subsistence of a great army, but Sheridan organized his depots of supplies and transportation trains with economy and wisdom, for the brave men who fought under Sigel. With a high sense of honor, Sheridan objected to the taking of any private property from the enemy, for self-aggrandizement, as was the case with some officers, and asked to be relieved from his present position.
Fortunately he was appointed on the staff of General Halleck in Tennessee, a man who soon learned the faithfulness and ability of his captain; and when the Governor of Michigan asked for a good colonel for the Second Michigan Cavalry, Sheridan was chosen. After sharing in several engagements around Corinth, he was attacked July 1, 1862, at Booneville, by a force of nine regiments, numbering nearly five thousand men. He had but two regiments! What could he do? Selecting ninety of his best men, armed with guns and sabres, he sent them four miles around a curve to attack the enemy's rear, and promised to attack at the same time in front. When the moment came, he rushed upon the foe as though he had an immense army at his back, while the handful of men in the rear charged with drawn sabres. The Confederates were thrown into confusion, and, panic-stricken, rushed from the field, leaving guns, knapsacks, and coats behind them. Sheridan chased them for twenty miles.
This deed of valor won the admiration of General Grant, who commended him to the War Department for promotion. He was at once made brigadier-general. Perhaps the boyish dreams of being a great soldier would not turn out to be air-castles after all. Men love to fight under a man who knows what to do in an emergency, and Sheridan's men, who called him "Little Phil," had the greatest faith in him.
In the fall, he was needed to defend Louisville against General Bragg. This Confederate officer had been told that he would find recruits and supplies in abundance if he would come to Kentucky. He came therefore, bringing arms for twenty thousand men, but was greatly disappointed to find that not half that number were willing to cast in their lot with the Secessionists. General Buell, of the Union army, received, on the contrary, over twenty thousand new soldiers here. Bragg prepared to leave the State, sending his provision train ahead, and made a stand at Perryville, Kentucky. Here Sheridan played "a distinguished part, holding the key of the Union position, and resisting the onsets of the enemy again and again, with great bravery and skill, driving them at last from the open ground in front by a bayonet charge. The loss in Sheridan's division in killed and wounded was over four hundred, but his generalship had saved the army from defeat."
Bragg determined now to make one great effort to hold Tennessee, and Dec. 31, 1862, gave battle at Stone River, near Murfreesboro'. General Rosecrans had succeeded Buell as commander of the Army of the Cumberland. Being a Romanist, high mass was celebrated in his tent just before the battle, the officers, booted and spurred, standing outside with heads uncovered. The conflict began on the right wing, the enemy advancing six lines deep. Our troops were mowed down as by a scythe. Sheridan sustained four attacks of the enemy, and four times repulsed them, swinging his hat or his sword, as he rode among his men, and changing his front under fire, till, his ammunition exhausted, he brought out his shattered forces in close column, with colors flying. Pointing sadly to them, he said to Rosecrans, "Here is all that are left, General. My loss is seventeen hundred and ninety-six,—my three brigade commanders killed, and sixty-nine other officers; in all seventy-two officers killed and wounded." The men said proudly, "We came out of the battle with compact ranks and empty cartridge-boxes!"
Even after this Sheridan recaptured two pieces of artillery, and routed the same men who had driven him. For noble conduct on the field he was made major-general of volunteers.