the legendary “Fighting 69th,” i.e., Meagher’s Irish Brigade of the American Civil War. The Meagher in question was Brigadier General Thomas Francis Meagher (August 3, 1823-July 1 ...

As a teenager, he was an apprentice to the Irish American photographer ... For the first year of the Civil War, O’Sullivan worked with Brady, and then in 1862 became assistant to colleague ...

At Fredericksburg, Pickett's men cut down the courageous "Irish brigade." But his luck changed ... himself in battle during the Mexican-American War and on the frontier, along the Texas border ...