Enlistment district
| Name | Details |
|---|---|
| Søren Jensen Odden | Born April 8, 1856 in Søndeled |
| Skib Oden | Build year 1854 |
| D/S Odin | Build year 1881 |
| Brigg Odin | Build year 1837 |
| Jens Leonard Ohlsen | Born April 29, 1884 in Risør |
| Sigvath Ohlsen | Born in Risør |
| Syvert Andreas Ohlsen | Born December 21, 1854 in Risør |
| Carl Christian Ohmann | Born July 18, 1860 in Arendal |
| Severin Julius Ohman | Born March 4, 1859 in Arendal |
| Carl Victor Olafsen | Born December 3, 1888 in Risør |
| Erik Olafsen | Born April 30, 1850 in Vegårdshei |
| Anton Olafsen Karlsen | Born October 28, 1886 in Risør |
| Kittel Olafsen | Born August 9, 1856 in Kvitseide |
| Olaf Olafsen | Born November 26, 1884 in Risør |
| Carl Alfred Olausson | Born September 28, 1851 in Qville, Sverige. |
| Olav Olavesen | Born December 6, 1882 in Søndeled |
| Oskar Ole Fredrik Oliversen | Born February 5, 1890 in Gjerstad |
| Adolf Olsen | Born February 12, 1865 in Søndeled |
| Alf Olsen | Born November 4, 1852 in Søndeled |
| Alf Olsen | Born November 17, 1841 in Sævig, Søndeled |
| Alf Olsen | Born September 5, 1851 in Risør |
| Anders Olsen | Born January 14, 1827 in Randvig,Søndeled |
| Anders Olsen | Born May 6, 1861 in Søndeled |
| Anders Olsen | Born July 13, 1871 in Gjerstad |
| Anders Olsen | Born February 5, 1867 in Søndeled |