4th California Volunteer Infantry | |
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![]() California flag | |
Active | September 1861 to April 18, 1866 |
Country | United States |
Allegiance | Union |
Branch | Infantry |
Engagements | La Paz incident Occupation of Santa Catalina Island |
The 4th California Infantry was a volunteer infantry regiment recruited from northern California during the American Civil War. It was organized at Sacramento, Placerville, and Auburn in September and October 1861.