FAUGH AU BALLAGH! WILLIAM MITCHELL AND HIS IRISH BRETHREN IN THE 28TH MASSACHUSETTS William Mitchell, the son of Irish immigrants, made his way to America and became a trader in shoes and leather goods. After the Civil War began, he and his son joined the 28th Massachusetts Infantry, a predominantly Irish regiment. For Mitchell, it was the culmination of his service in militia companies dating back three decades. Here's his story. "Life on the Civil War Research Trail" is hosted by Ronald S. Cod