The 1910 census records those individuals and families living in a particular residence as of April 15, 1910. Of particular interest in this census is column 30, "Whether a survivor of Union or Confederate Army or Navy," which can help determine if pension and service records may be available for that individual.
"Thirteenth Census of the United States, 1910" database with images Fold3 (https://www.fold3.com/publication/644/census-us-federal-1910: accessed June 28, 2022)
Census - US Federal 1910
6,501,688 · Complete: 6%
Published on Fold3
19 Oct 2009
21 Jul 2010
NARA T624. Thirteenth Census of the United States, 1910 population schedules.