The following list includes those men from Groton who served in the Civil War. An asterisk after a name indicates that man died while in service.
| Name | Regiment | Date of Enl. | Remarks |
| Ann is, Wm. H.N. | 3d Reg., Co. F | 8/13/62 | Disch. Mar. 27, 1864. |
| Brock, Charles H * | 6th Reg., Co. B | 9/24/61 | Died Ocr. 18, 1862 of disease. |
| Brock, Edward A. * | 6th Reg., Co. G | 11/30/63 | Died Oct. 19, 1864 of disease. |
| Burbank, Andrew S. | 7th Reg., Co. F | 9/3/64 | Must. out July 14, 1865 |
| Bur bank. Charles H. * | 3d Reg., Co. C | 7/11/61 | Prom. Corp. Killed in action May 5, 1864. |
| Burnham, Charles L. | 3d Reg., Co. F | 6/1/61 | Wd. Apr. 16, 1862. Disch. July 12, 1863 for disability. |
| Carpenter, Andrew j. | 15th Reg., Co. D | 9/15/62 | Must. out Aug. 5, 1863 |
| Carpenter, Lafayette | 15th Reg., Co. D | 9/15/62 | Must. out Aug. 5, 1863 |
| Carrick, Frank F. |
Unclassified
| Subs. for William Ricker | |
| Carter, Allen H. | 1st Reg. Cav., Co. B | 8/15/64 | Must. out June 21, 1865 |
| Darli ng, Aaron | 3d Reg., Co. F | 8/13/62 | Prom. Corp. July 16, 1864.Wd. May 5, 1864. Trans. to Co. B July 25. 1864. Must. out June 19. 1865 |
| Darling, Marshall J | 1st Reg. Cav., Co. D | 8/16/62 | Disch. Mar. 16, 1863 for disability |
| Darling, Walter S. | 12th Reg., Co. H | 8/29/62 | Disch. Mar 10, 1862 for disability |
| Demmon, Henry B. | 1 7th Reg.. Co. | 3/29/64 | Prom. Corp. July 1, 1864. Must. out July 15, 1865. |
| Dow, Charles D. * | 3d. Reg.. Co. B | 8/13/62 | Died Dec. 21, 1862 of disease. |
| Eastman, Seth N. | 6th Reg., Co. B | 8/ /61 | In service until end of war. |
| Eggleston. Harley A. | 17th Reg.. Co. C | 8/2/64 | Subs. for Daniel Coffrin. Must. out July 14, 1865 |
| Emcry, Asa S. | 8th Reg., Co. D | 12/7/61 | Wd. May 27, 1863. Must. out June 22, 1864. |
| Emery, Charles | 3d Reg.• Co. H | 7/1/61 | Musician. Must. out July 27, 1864. Re-enlisted Sept. 3, 1864. Must. out June 19, 1865. |
| Emery, Charles G. | 8th Reg., Co. C | 1/9/62 | Re-enl. Jan. 5, 1864. Pris. May 27, 1863. Parol. July 2, 1863. Must. out June 28, 1865 |
| Emery, Jeremiah | 3d Reg., Co. H | 8/13/62 | In service to the end of the war. |
| Emery, Obed | 3d Reg., Co. H | 12/8/63 | Wd. Aug. 21, 1864. Trns. to Co. K July 25, 1864. Must. out July 11, 1865 |
| Emery, Simon, Jr. | 3d Reg., Co. C | 9/3/64 | Must. out June 19, 1865 |
| Emery, Timothy, Jr. | 3d Reg., Co. H | 8/13/62 | Trans. to Co. K July 25, 1864. Must. out June 19, 1865. |
| Fessenden, Peter | 17th Reg., Co. E | 3/25/64 | Wd. May 6, 1864. Must. out May 22, 1865. |
| Frost, lsaiah | 3d Reg., Co. F | 8/14/62 | Trns. to Co. B July 25, 1864. Must. out June 19, 1865. |
| Goodwin, Isaac M.* | 15th Reg., Co. D | 9/l7/62 | Died Apr. 3, 1863 of disease |
| Goodwin, Reuben* | 3d Reg., Co. H | 8/12/62 | Killed in action May 5, 1864. |
| Goss. Mic hael | 17 Reg. | 7/15/64 | Subs. for Joseph Noyes. No record. |
| Greene, Edmund * | 2d Battery, Light Art. | 1/20/62 | Pris. Aug. 3. 1863. Died Aug. 10, 1864. |
| Hannon, Michael | lst Reg. Cav., Co. F | 9/l7/64 | Des. Oct 6. 1864. |
| Harrington, Henry | 17th Reg., Co. G | 3/9/64 | Prom. Corp. May 17, 1865. Must. out July 14, 1865 |
| Hayes, William | 3d Reg., Co. F | 7/28/62 | Disch. Feb. 17, 1864. |
| Heath, Augustus M. | 15th Reg., Co. D | 9/15/62 | Prom. 1st Serg. June 20, 1863. Must. out Aug. 5, 1863. |
| Hood, Albert | 1st Reg. Cav., Co. A | 8/15/64 | Must. out June 21, 1865. |
| Hood, Horace | 3d Reg., Co. F | 8/21/62 | Trans. to Co. B Jul. 25, 1864. Must. out June 27, 1865. |
| Hosmer, Benjamin H. | 3d Reg., Co. A | 8/12/63 | Wd. May 5, 1864. Trans. V.R.C. Sept. 7, 1864. Disch. Sept 30, 1864. |
| Jones, Charles F. | 3d Reg., Co. C | 1/4/62 | Wd. May 12, 1864, and June 10, 1864. Disch. June 27, 1865 for disab. |
| Judd, William | 8th Reg., Co. C | 3/6/65 | Must. out June 28, 1865. |
| Kidder, Aaron * | 8th Reg., Co. A | 11/28/63 | Died June 10, 1864 of gen. debility. |
| Lamphere, Charles E. | 15th Reg., Co. D | 9/15/62 | Musician. Must. out Aug. 5, 1863. |
| Lund, Rufus C. | 3d Reg., Co. F | 8/11/62 | Trns. to Co. K July 25, 1864. Must. out June 19, 1865. |
| Lund, Synvanus * | 1st Reg. Cal., Co. D | 8/11/62 | Killed in action July 3, 1863. |
| Martin, John P. | 7th Reg., Co. F | 9/3/64 | Must. out July 14, 1865. |
| Mauhew, Francis | l7th Reg., Co. F | 3/24/64 | Musician. Must. out J uly 14, 1865 |
| Melville, Thad S.W. * | 1 5th Reg., Co. D | 9/15/62 | Died May 1, 1863 of disease. |
| Miller, David 2d | 15th Reg., Co. D | 9/15/62 | Prom. Corp. June 20, 1863. Must. out Aug. 5, 1863. |
| Morrison, Silas B. | 15th Reg., Co. D | 9/15/62 | Corp. Must. out Aug. 5, 1863. |
| Noyes, Amos H. | 17th Reg., Co. E | 8/2/64 | Sub. for Hosea Welch, 2d. Trans. to Co. C Wd. Apr. 2, 1865. Must. out July 14, 1865. |
| Orr, William G.S. | 3d Reg., Co. C | 12/24/61 | Disch. Aug. 7, 1862 for disability. |
| Page, Alvah G. * | 3d Reg., Co. F | 7/30/62 | Died July 22, 1862 of wds. recd. July 10, 1863. |
| Page, George G. | 3d Reg., Co. H | 12/5/63 | Disch. Oct 5, 1864 for wds. recd. May 6, 1864. |
| Page, Leverett H. | 3d Reg., Co. C | 6/1/61 | Disch. July 9, 1864 for wds. recd. May 5, 1864. |
| Page, Morris C. * | 3d Reg., Co. H | 7/30/62 | Died May 13, 1864 for wds. recd. May 5, 1864. |
| Page, Moses, Jr. | 3d Reg., Co. H | 7/9/61 | Must. out J uly 27, 1864. |
| Philbrick, George W. | 4th Reg., Co. B | 8/23/61 | Disch. Sept. 30, 1862 for disability. |
| Pillsbury, George W. | 4th Reg., Co. C Hancock’s lst Army Corps | 2/20/65 | Must. out March 3, 1866 |
| Rhodes, Josiah R. | 15th Reg., Co. D | 9/15/62 | Must. out Aug. 5, 1863. |
| Ricker, Everett D. * | 6th Reg.. Co. E | 9/23/61 | Died Apr. 27, 1862 of disease. |
| Ricker, Josiah D. | 15th Reg., Co. D | 9/15/62 | Must. out Aug. 5, 1863 |
| Scott, Daniel W. * | 6th Reg., Co. B | 12/1/63 | Di ed March 25. 1864 of disease. |
| Scott, George * | 6th Reg., Co. B | 9/30/61 | Died Nov. 4, 1862 of disease. |
| Scott, John W. | 6th Reg., Co. B | 8/9/62 | Trans. to Co. H. Oct. 16, 1864. Must. out June 19, 1865. |
| Scott, Joseph W. | 6th Reg.• Co. B | 11/28/63 | Trans. to Co. H Oct. 16, 1864. Must. out Jun:26, 1865. |
| Scott, William * | 3d Reg., Co. K | 7/10/61 | The “Sleeping Sentinel.” Died April 17. 1862 of wds. recd. |
| Stebbins, George W. | 3d Reg., Co. C | 6/1/61 | Disch. Oct. 20, 1862 for disab. Later enl. in marines. No record. |
| Taisey, Robert | 3d Reg., Co. B | 9/24/61 | Must. out Oct. 28, 1864. |
| Usher , Nathan D. | 15th Reg., Co. D | 9/15/62 | Must. out Aug. 5, 1863. |
| Vance, Martin V.B. | 7th Reg., Co. F | 9/3/64 | Must. out July 14, 1865. |
| Vance, Willis H. | 15th Reg., Co. D | 9/17/62 | Pris. March 9. 1863. Parol. March 18, 1863.Must. out Aug. 5, 1863. |
| Vance, Morris C. | 3d Reg., Co. C | 6/1/61 | Wagoner. Private Aug. 12, 1862. Must. out July 27, 1864. |
| Weed, Timothy B. | 7th Reg., Co. F | 3/7/65 | Must. out March 14, 1866. |
| Welch, Ira L. | 7th Reg., Co. F | 3/8/65 | Must. out March 8, 1866. |
| Whitehill, George W. * | 6th Reg., Co. B | 12/15/63 | Pris. May 5, 1864. Died July 31, 1864. |
| Whitehill, Haynes W. | 6th Reg., Co. B | 12/19/63 | Trans. to Co. H Oct. 16, 1864. Must. out June 26. 1865. |
| Whitehill, John D. | Hancock’s 1st Army Corps | 7/22/62 | Disch. Nov. 1862 for disability. |
| Whitehill, Walter | 7th Reg., Co. F | 3/6/65 | Must. out Aug. 5. 1865. |
| Wilson, John | 17th Reg., Co. F | 7/15/64 | Subs. for Thomas B.Hall. Absent sick Aug. 25, 1864. |
| Wormwood, Daniel | 15th Reg., Co. D | 9/ 15/62 | Must. out Aug. 5, 1863. |