21st Regiment or 21st Infantry Regiment may refer to:
- 21 Regiment Special Air Service, a unit of the British Army
- 21st Infantry Regiment (Thailand), a unit of the Royal Thai Army
- 21st Infantry Regiment (United States), a unit of the United States Army
- 21st Lancers, a unit of the British Army
- 21st Punjab Infantry, a unit of the British Army
- 21st Marine Infantry Regiment, a unit of the French Marines
- 21st Marine Regiment (United States), a unit of the United States Marine Corps
- American Revolutionary War regiments
- 21st Continental Regiment
- American Civil War regiments
- 21st Iowa Volunteer Infantry Regiment
- 21st Illinois Volunteer Infantry Regiment
- 21st Maine Volunteer Infantry Regiment
- 21st Michigan Volunteer Infantry Regiment
- 21st Mississippi Infantry Regiment
- 21st Ohio Infantry
- 21st Regiment Kansas Militia Infantry
- 21st Regiment Kentucky Volunteer Infantry
- 21st Regiment Massachusetts Volunteer Infantry
- 21st Wisconsin Volunteer Infantry Regiment
Read more about 21st Regiment: See Also
Famous quotes containing the word regiment:
“We had an inspection today of the brigade. The Twenty-third was pronounced the crack regiment in appearance, ... [but] I could see only six to ten in a company of the old men. They all smiled as I rode by. But as I passed away I couldn’t help dropping a few natural tears. I felt as I did when I saw them mustered in at Camp Chase.”
—Rutherford Birchard Hayes (1822–1893)