FOUGHT IN MANY BATTLES. DEATH OF GEN. THOMAS W. EGAN AND SKETCH OF HIS CAREER. Gen. Thomas W. Egan was taken sud- senly ill at the International Hotel on Wednes- day evening and died yesterday afternoon in the Chambers-Street Hospital. He was about 55 years of age and had been in failing health for some years past. The cause of his death was epilepsy. Gen. Egan entered the volunteer service as Quartermaster of the Fortieth New-York Volun- teers, commonly known as the "Constitution Guard" and the "Mozart Regiment," in April 1861. He left Yonkers for the seat of war on July 4 of that year, having been appointed Lieutenant-Colonel. Misconduct on the part of his Colonel at Fair Oaks, Va., in May, 1862, compelled Egan to put his superior officer under arrest. This action was afterward ap- proved by the military board that investigated the matter. At the battle of Fair Oaks Egan displayed extraordinary gallantry, and in June was com- missioned Colonel. He commanded the regi- ment in the battles of Robinson's Field, Savage Station, Charles City, Cross Roads, Malvern Hill, Second Bull Run, Chantilly, Chancellors- ville, Gettysburg, Mine Run, Wilderness, and Ny River. He also commanded a brigade in the battles of Spottsylvania Court House, North Anna River, Cold Harbor, and Petersburg. Gen. Egan was wounded at Gettysburg, and had two horses shot under him there. He always scorned to dismount under fire, and the result was that eight horses were shot under hime during the war. In June, 1864, he was wounded at Peters- burg and was compelled to retire for a period of two months. The wound was near the spine and caused a slight paralysis of the lower limbs. On Sept. 3, 1864, he was promoted to the grade of of Brigadier-General. Secretary Stanton per- sonally handed him his commission and spoke in glowing terms of his meritorious conduct. After receiving his commission Gen. Egan was placed in command of the Second Brigade, Sec- ond Division, Second Army Corps, then in front of Petersburg. He commanded four brigades at the battle of Boydton Plank Road, Oct. 27, 1864, and for his skill and bravery on that occasion he was brevetted Major-General. On Nov. 14, 1864, he was badly wounded before Petersburg, and at the request of Gen. Hancock he was sent to the Shenandoah Valley to take charge of the Provisonal Division. He recovered sufficiently to do active work, however, and was under marching orders when Gen. Lee surrendered. Gen. Egan was mustered out of service on Jan. 15, 1866. After his retirement from the army he was appointed a Deputy Collector in the Custom House in this city, and held that position until about six years ago. For three years he has been living in the International and other hotels down town. He was a member of Shields Post, G.A.R., and the veterans are making arrange- ments to bury him with military honors.