| Olalde | Benito | | | Army | | Korean | | Decatur | | Journal Gazette obit., 6-30-2007, American Legion Post 43 |
| O'Laughlin | Elbert M. "Bud" | | | Navy | | WWII | Pacific | Fort Wayne, Indiana - Fiarmount, lllionis | | Journal Gazette obit., 3-2-2009, METRO Page 2C, American Legion Post 296 |
| Olcott | Richard L | | PVT | Army of the U.S. - Air Corps | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olcott | Richard L. | | 1st LT | Air Force - 1950's | | Korea - Cold War | Korea | Fort Wayne, Indiana | Died while Missing in Action 10-18-1951 | Indianakoreanwarmemorial.homestead.com |
| Olcott | Richard L. | | 1st LT. | Air Force | | Korea - Cold War | Continental United States - Korea | Fort Wayne, Indiana | MIA - Died While Missing - Oct 18 1951 - Purple Heart | indianakoreawarmemorial.homestead.com 10-15-2010 |
| Olcott | Richard L. | | Airman | Air Force | 1951 | Korea - Cold War | Korea | Allen County, Indiana | | Korean War Veterans Association Memorial, 5365 Concordia Gardens Cemetery, Fort Waye, IN |
| Olcott | Richard L. | | Airman | Air Force | | Korea - Cold War | Continental United States - Korea | Allen County, Indiana | | Allen County List of Korean Conflict Casualties, Date of Entry 2-18-2011 |
| Olcott | Richard L. | | LT. | USAF | | Korean & Cold War | | Fort Wayne, Indiana | K Purple Heart | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 2D, Serial Number AO736315 |
| Olden | Roy Eugene Van | | | | | Viet Nam | Continental United States - Viet Nam | Fort Wayne, Indiana | | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011 |
| Oldenkamp | John L. | | PFC - Airman | Army Air Corps 1942 - 1945 | | WWII | England - Europe | Fort Wayne, Indiana - Rock Valley, Iowa | Deceased 9-27-2019, 95 Years Old, Born 6-10-1924 | Journal Gazette obit., 10-6-2019, Front Section, Page 4A, No Burial Information |
| Oldham | Donald E. | | PVT | Army | | WWII | Continental United States | Westfield - Fort Wayne, Indiana | | Journal Gazette obit., 10-19-2010 Metro Section Page 2C, Buried Friends Cemetery, Pendelton, IN, Greensburg Lions, Mason |
| Oldham | Frank Edward | Jr. | PVT | Army | | Cold War | | Fort Wayne, Indiana - Clarksville, Tennessee | | Journal Gazette obit., 7-9-2004 METRO Page 3C |
| Oldham | Harry | | Airman | Air Force | | Korean & Cold War | | Fort Wayne, Indiana - Riverside, California | | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 141, Serial Number AF16311148 |
| Oldham | Mike | | Seaman | Navy | | Cold War | Continental United States - NAC, Indianapolis, Indiana | Pendleton, Indiana | | News Sentinel obit., 11-11-2009 Front Section Page 6A |
| Oldham | Robert A. | | | | | Viet Nam | Continental United States - Viet Nam | Fort Wayne, Indiana | | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011 |
| Oldham | Robert Alan | | Private | Army | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | | News Sentinel obit., 6-29-2015, Front Section, Page 4A, Buried in LIndenwood Cemetery, Ellis Funeral Home, AL Post 148 |
| Olds | James H.S. | 1st | LT - Airman | Regular Army - 1918 | Aviation Corps AEF Air Service | WWI | France | Allen County, Indiana | | History of War Work of Allen County, Indiana 1917 - 1919, Page 428 |
| Olds | James Henry Simonson | 1st | LT | Army - 1918 | List of Commisioned Officers' During War Aviation Corps | WWI | Continental United States | Allen County, Indiana | | History of War Work of Allen County, Indiana 1917 - 1919, Page 339 |
| Olds | James Henry Simonson | III | CMSGT | Army - 1960's | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | Active Member - Chaplin | Membership List 11-7-2014 - Disabled American Veterans, Chapter 40, Fort Wayne, Indiana |
| Olds | James Henry Simonson | III | CMSGT | Army - 1960's | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | Active Member | Personal Input - Allen County Council of Veterans |
| Olds | James Henry Simonson | III | CMSGT - Retired | Army - 1960's - Army Reserve | Infantry | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | | Personal Input 7-5-2016 |
| Olds | James Henry Simonson | III | SGTM | Army - 1960's | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | Active | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011 |
| O'Leary | Jack L. | | | | | | | Waynedale, Indiana | | May 10 2011 David Parrish American Legion Post 296 Past 4th District Commander 1982 - 1983 |
| Olin | Charles R. | Jr. | PVT | Marine Corps | | WWII | Continental United States - Pacific | Fort Wayne, Indiana - Akron, Ohio | | Journal Gazette obit., 1-14-2002 Front Section Page 4A |
| Olinger | Budd Derril | | PVT | Army | | Korean & Cold War | | Fort Wayne, Indiana | | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 141, Serial Number US55170458 |
| Olinger | Jean R. | | PVT | Army | | Korean & Cold War | | Winnona Lake - Warsaw, Indiana | | Journal Gazette obit. 10-24-2002 Local Page 3C, Warsaw American Legion Post and VVFW Post |
| Olinger | Joe George | | PVT | Army | | Korean & Cold War | | Fort Wayne, Indiana | | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 141, Serial Number US55137593 |
| Olinghe | Jack Edward | | PVT | Marine Corps | | Korean & Cold War | | Fort Wayne, Indiana | | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 141, Serial Number 1120109 |
| Olinghouse | David H. | | 2nd LT. | Air Force | | POST WW II - Cold War | Continental United States | Fort Wayne, Indiana - Sturgis, Michigan | | Journal Gazette obit., 3-23-2010 Front Section Page 4A |
| Oliphant | Rick | | PVT | Army | | WWII | Continental United States - Europe | Fort Wayne, Indiana | | Journal Gazette Article 11-25-2010 Page 15A |
| Oliphant | Rick | | PVT | Marine | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana - Waterloo, Iowa | | News Sentinel obit., 3-19-2014 Local Section Page 2L, Service The Chapel 2505 W. Hamilton Road, Ft. Wayne, IN |
| Oliver | Don L | | SSGT | National Guard - Medical Department | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Oliver | Donald D. | | PVT | Army | | Korean & Cold War | | Bluffton - Wells County, Indiana | | Journal Gazette obit., 3-1-2003 FINAL EDITON Page 7A |
| Oliver | Homere W. | | PVT | Army | | WWII | Continental United States - Europe | Columbia City, Indiana | | Journal Gazette obit., 1-30-2010 Metro Page 2C, Buried Coesse Hope Lutheran Cemetery, Coesse, Indiana |
| Oliver | Jack W. | | LT. Commander | Navy | | WWI | Continental United States - Pacific | Leo - Ft. wayne - Coesse, Indiana - Illionis | | News Sentinel obit., 2-27-2012 Front Section Page 4A, Buried Elmwood Cemetery, Birmingham, Alabama, Bronze Star |
| Olivieri | John | | PVT | Regular Army - American Air Service | 257th Aero Squardron AEF | WWI | Continental United States, France | Allen County, Indiana | Born in Rome, Italy | History of War Work of Allen County, Indiana 1917 - 1919 Page 428 |
| Olmstead | Cady | | SGT Volunteer | Regular Army - Infantry | Company C 40th Infantry Regiment | WWI | Continental United States | Allen County, Indiana | | History of War Work of Allen County, Indiana 1917 - 1919 Page 428 |
| Olofson | Phillip H | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olofson | Phillip H. | | PVT | Army | | WWII | Europe | Fort Wayne, Indiana | | Journal Gazette obit., 5-11-2007 METRO Page 2C, Manager & Promoter Allen County War Memorial Colesium |
| Olry | Alvah J | | PVT | Army of the U.S. - Air Corps | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olry | Alvan J. | | | Army Air Corps | | WWII | | Fort Wayne, Ind - Faith, South Dakota | | News Sentinel Obit., 12-29-2008 Local Page 2L |
| Olry | Howard F | | PVT | Regular Army | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Ols | Jack H | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olsen | John J | | CPL | National Guard - Infantry | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olsen | Matthew E. | | PVT | Army | | | Continental United States | Fort Wayne, Indiana | | The Shepherd's House Wall of Honor Graduate 4-18-2013 |
| Olson | Byron Warren | | Airman | Air Force | | Korean & Cold War | | Fort Wayne, Indiana | | List of Korean War Veterans 6-25-1950 to 7-23-1953, Date as of 8-1-1956 Page 141, Serial Number AD15359575 |
| Olson | Everett A | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olson | Frederick C. | | | | | Viet Nam | Continental United States - Viet Nam | Fort Wayne, Indiana | | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011 |
| Olson | James Dennis | | PFC | Army - 1960's | | Vietnam - Cold War | Vietnam | Fort Wayne, Indiana | | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011 |
| Olson | James R. | | PFC | Army - 1960's | | Vietnam - Cold War | Continental United States | APO, New York - Allen County, Indiana | | Allen County Viet Nam Veterans Bonus Listing, Date of Entry 2-22-2011, Disallowed |
| Olson | Jameson C. | | Airman | USAF | 363rd TFW/363rd Supply, USCENTAF(POL) | Persian Gulf | | | | Moellering,C. Ft. Wayne,Ind., Area and Hometown Military Personnel Serving in Operation Desert Shield in the Mideast. |
| Olson | Michael | | PFC | Marine - 1988 | | Desert Shield - Desert Storm | Saudi Arabia | Fort Wayne, Indiana | Wounded - Purple Heart | Journal Gazette Article, 5-15-2010, Front Section, Pages 1&6A |
| Olson | Paul W | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olson | Richard B | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olson | Richard B. | | PFC | Army - 1942 - 1945 | | WWII | England - europe | Fort Wayne, Indiana | Deceased Member | Journal Gazette obit., 7-25-2008, Metro Section, Page 2C, No Burial Information, American Legion Post 241 |
| Olson | Robert | | PFC | Army - 1942 - 1945 | | WWII | England - Europe | Fort Wayne, Indiana - Black Falls, Wisconsin | Deceased | Journal Gazette obit., 12-22-2004, Metro Section, Page 2C, No Burial Information |
| Olson | Robert E | | PVT | Army - Selectees | | WWII | | Allen Co. | | NARA - Electronic Army Serial Number Merged File, ca. 1938 - 1946 |
| Olson | Steven E. | | CAPT | | HHC, 2d Bde., 101st ABN Div (AASLT) | Persian Gulf | | | | Moellering,C. Ft. Wayne,Ind., Area and Hometown Military Personnel Serving in Operation Desert Shield in the Mideast. |
| Olson | William A. | | Seaman | Coast Guard - 1942 - 1945 | | WWII | Atlantic Ocean | Fort Wayne, Indiana - New York City, New York | Deceased | Journal Gazette obit. 9-4-2003, Metro Section, Page 3C, No Burial Information |
