Ruckman, John Wilson was born on October 10, 1858 in Sydney, Illinois, United States. Son of Thomas and Mary (O’Brien) Ruckman.
Graduated from the United States Military Academy, 1883, Artillery School, 1892, Army War College, 1915, Naval War College, 1916.
Of late Colonel John Hamilton, United States of America, June 16, 1887. Commissioned Second lieutenant 5th Artillery, June 13, 1883. Promoted through grades to colonel C.A. Corps, March 7, 1912.
Brigadier general, July 20, 1916. Major general N.A., August 5, 1917-May 1, 1918. First editor of Journal of the United States Artillery, 1892-1896.
Served in Havana, Cuba, with Army of Occupation, 1899-1901. Instructor School of Submarine Defense, 1901-1904. In Philippine Islands, 1911-1914, and inspector general there, 1911-1912.
Assigned to command 5th provisional regiment coast artillery, Del Rio, Texas border, July 3, 1916. Later also commanding district of El Paso Rio Grande, and district of Laredo, to July 1917. Commanded S. Atlantic Coast Artillery District, Charleston, South Carolina., July-August 1917, Southern Department, August 30, 1917-May 1, 1918, Northeastern Department, Boston, May 23-July 20, 1918, N. Atlantic Coast Artillery District, Boston, July 21, since 1918.
Wrote: The Command and Administration of the Fortress of Port Arthur during the Russo-Japanese War. Inventor many devices for use in war.