Charles H. Williams was a resident of Mansfield on January 5, 1864 when he enlisted as a Private in Co. D of the 1st Regiment Connecticut Volunteer Heavy Artillery; he was transferred to the 7th Regiment Veterans Reserve Corp on December 30, 1864. Charles Williams was discharged on July 20, 1865.
He was not living in Mansfield in the 1860 U.S. census; no further information is known.
On June 25, 1892, he applied for an invalid pension under No. 1,118,556 that was granted under No. 853,718.