An abridged unit history of the 135th Field Artillery Regiment, Ohio National Guard, which was called into federal service for various conflicts.

The 135th Field Artillery Regiment, Ohio National Guard, is an offshoot of the 134th Field Artillery Regiment, Ohio National Guard, and thus shares earlier history. An updated lineage is available through the U.S. Army Center of Military History's website under the 134th FAR.

Heraldic description of the coat-of-arms, 135th F. A. --1839-1861 -- 1861-1865 -- 1865-1886 -- 1886-1916 -- 1916-1919 -- 1919-1936 -- Officer personnel of the 135th Field Artillery Regiment, 1936 -- Appendix "A" Official War Department order authorizing 135th F. A. history. -- Appendix "B" List of engagements - Civil War.