IA 10th Inf Co K. Residence: Story County, Iowa. Born in Norway. Civil War: Age 21. Enlisted 1 Oct 1861. Mustered 11 Oct 1861. Private. Wounded in action 8 Oct 1862 near Charlestown, Missouri. Mustered out 11 Oct 1864, Cartersville, Georgia, expiration of term of service. Post war: In 1885, J O Johnson was living in Cambridge, Iowa. Sources: (ISW-II p207) (XSS Iowa p274)