“As there had been only two prominent Irish generals, and only one, Cleburne, had had a very distinguished record, the story of the common soldier was the story of the Irish Confederate.
Edit - Not sure what you were thinking about with the previous two posts, but I take this as your final answer.
Unfortunately, it is incorrect. I'm accepting either "Irish Volunteers" or "Emerald Guard," but they didn't refer to themselves simply as "Ireland." Even if they did, the answer fails to specify any unit to which they belonged.
Edit - Various sources give the name as Emerald Guards, Emerald Light Infantry, Irish Volunteers, or Irish Volunteers for the War. I am accepting any of those as a correct answer to the first part of the question.
And various sources indicate that they were part of the 1st South Carolina, the 17th South Carolina, or the 27th South Carolina. I am accepting any of those as a correct answer to the second part of the question. (I consider the regiment to be a sufficient identification of the unit and am not requiring that a correct answer specify the company. If the questioner had intended that an answer should specify the company, that should have been made clearer.)