| 28th Regiment Massachusetts Volunteer Infantry | |
|---|---|
 28th Massachusetts Irish Brigade "Tiffany" flag, presented by Brig. Gen. Thomas Francis Meagher. | |
| Active | December 13, 1861 – June 30, 1865 |
| Country |  United States of America |
| Allegiance | Union |
| Branch | United States Army |
| Type | Infantry |
| Size | 1,778 |
| Part of | In 1863: 2nd Brigade (Meagher's), 1st Division (Hancock's), II Corps, Army of the Potomac |
| Nickname(s) | 4th Regiment of the Irish Brigade |
| Motto(s) | Faugh a Ballagh! (Clear the Way!) |
| Colors | Green |
| March | Garryowen |
| Engagements | Battle of Secessionville Second Battle of Bull Run Battle of Chantilly Battle of Antietam Battle of Fredericksburg Battle of Chancellorsville Battle of Gettysburg First Battle of Auburn Battle of Bristoe Station Battle of the Wilderness Battle of Spotsylvania Court House Battle of Cold Harbor Siege of Petersburg Battle of Appomattox Court House |
| Commanders | |
| Notable commanders | Col. Richard Byrnes |
| Insignia | |
| II Corps (1st Division) badge |  |
| Massachusetts U.S. Volunteer Infantry Regiments 1861-1865 | ||||
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The 28th Massachusetts Infantry regiment was the second primarily Irish American volunteer infantry regiment recruited in Massachusetts for service in the American Civil War. The regiment's motto (or cry) was Faugh a Ballagh (Clear the Way!)