Company “A”—Captain Haggerty. Company “B”—Captain Lynch. Company “C”—Captain Cavanagh. Company “D”—Captain Clark. Company “E”—Captain Kelly. Company “F”—Captain Breslin. Company “G”—Captain Duffy. Company “H”—Captain James Kelly. On the 22nd of May a body of three hundred men, known as Meagher’s Zouaves, recruited after the regiment’s departure, joined Colonel Corcoran at the Capitol City. At midnight on the 23d of May the 69th, together with the 5th Massachusetts, the 28th New York, and a detachment of regular cavalry, crossed the Aqueduct Bridge at Georgetown into Virginia. On the following morning the regiment began the construction of Fort Corcoran, which, with Fort Runyon, constituted the first regular works erected by Federalist forces at the beginning of the Civil War, and the ceremonies attending the raising of the flag on the occasion were participated in by Colonel Corcoran, Colonel David Hunter and Captain Thomas Francis Meagher, two of whom subsequently attained the rank of Brigadier General (Corcoran and Meagher) and the third of whom (Hunter) afterwards became a Major General. The 69th, together with the 79th and 13th New York and 2d Wisconsin regiments, and a Battery of Light Artillery, U. S. A., composed the 3d Brigade of the 1st Division of McDowell’s Army, having for its Brigade Commander Colonel William Tecumseh Sherman, of the 13th U. S. Infantry, whose distinguished achievements in after years elevated him to foremost rank among the great Captains of history. Brigadier General Daniel Tyler commanded the division.