(C) Oakland, Patrick, U.S. Army - Vietnam War
(C) Obenour, George G., U.S. Army - World War I
(S) Obermeyer, Charles R., U.S. Army - World War II
(C) Obermeyer, Herman, U.S. Army - World War I
(C) O'Brien, Charles, U.S. Army - World War I
(C) O'Brien, Cornelius J., U.S. Army - World War I
(C) O'Brien, James J., U.S. Army - Philippine Insurrection
(C) O'Brien, John Francis, U.S. Marine Corps - World War I
(C) O'Brien, John J., U.S. Army - World War I
(C) O'Brien, John J., U.S. Army - World War I
(C) O'Brien, Joseph P., U.S. Army - World War I
(S) O'Brien, Kenneth J., U.S. Army Air Forces - World War II
(S) O'Brien, Leo W., U.S. Army - World War II
(C) O'Brien, Terence Dale, U.S. Army - Vietnam War
(C) O'Brien, Thomas A., U.S. Army - World War I
(S) O'Brien, Thomas F., U.S. Army (First Award) - World War II
(C) O'Brien, Thomas F., U.S. Army (Second Award) - World War II
(C) O'Brien, William H. J., U.S. Army - World War I
(S) Occhino, Joseph, U.S. Army - World War II
(C) O'Claire, Richard D., U.S. Army - Vietnam War
(C) O'Connell, Albert L., U.S. Army - World War I
(C) O'Connell, Michael, U.S. Army - World War I
(S) O'Connell, Stephen W., U.S. Army - World War II
(C) O'Connell, Terrence M., U.S. Army - Vietnam War
(S) O'Conner, Edward R., U.S. Army - World War II
(C) O'Connor, Brendan, U.S. Army - Operation Enduring Freedom
(C) O'Connor, Daniel, U.S. Army - World War I
(S) O'Connor, Frank Q., U.S. Army Air Forces - World War II
(C) O'Connor, Harry Grover, U.S. Army - World War I
(C) O'Connor, James, U.S. Army - World War I
(C) O'Connor, John Henry, U.S. Army - World War I
(S) O'Connor, Oscar L., U.S. Army - Vietnam War
(C) O'Connor, Thomas P., U.S. Army - World War I
(C) O'Daniel, John W., U.S. Army - World War I
(S) O'Dea, Michael J., U.S. Army - World War II
(S) O'Dea, Padraig M., U.S. Army - World War II
(C) Odegard, Henry O., U.S. Army - World War II
(C) O'Dell, Edgar H., U.S. Army - World War I
(C) O'Dell, Eugene J., Jr., U.S. Army - Vietnam War
(C) Oden, Delk McCorkle, U.S. Army - World War II
(C) Odenwald, William, U.S. Army - World War I
(C) Odin, Arthur S., U.S. Army - Philippine Insurrection
(S) Odiorne, Richard L., U.S. Army - World War II
(C) Odom, Hubert, U.S. Army - World War II
(S) O'Donald, Carroll T., U.S. Army - World War II
(C) O'Donnell, Emmett, Jr., U.S. Air Force - Korean War
(S) O'Donnell, Francis C., U.S. Army - World War II
(S) O'Donnell, Howard W., U.S. Army - World War II
(C) O'Donnell, Joseph T., U.S. Army - Korean War
(C) O'Donnell, Paul J., U.S. Army Air Service - World War I
(S) O'Donnell, Thomas B., U.S. Army - World War II
(S) O'Donovan, James J., U.S. Army - World War II
(S) Odyniec, Joseph A., U.S. Army - World War II
(S) Oelrich, Christie B., U.S. Army - World War II
(S) Oestreicher, Robert G., U.S. Army Air Forces - World War II
(S) Oettel, Fred W., U.S. Army Air Forces - World War II
(S) O'Farrell, Rufus E., Jr., U.S. Army - World War II
(C) Offinger, Earl C., U.S. Army - World War I
(C) O'Flaherty, Coleman E., U.S. Army - World War I
(C) Ogas, Fred, Jr., U.S. Army - Vietnam War
(C) Ogden, George, U.S. Army - World War I
(C) Ogden, Ira C., U.S. Army - World War I
(C) Ogle, Edward W., Jr., U.S. Army - World War I
(C) Oglesby, James N., U.S. Army - Korean War
(C) O'Hagan, Thomas P., U.S. Army - World War I
(C) Ohmer, Charles, U.S. Army - Interim Award
(C) Oiler, George, U.S. Army - World War I
(C) Okamoto, Vincent Hichiro, U.S. Army - Vietnam War
(C) Okamura, Arthur I., U.S. Army - Korean War
(C) Oke, Russell, U.S. Army - World War I
(C) O'Keefe, Arthur J., U.S. Army - World War I
(S) O'Keefe, Arthur J., U.S. Army - World War II
(C) O'Keefe, Daniel J., U.S. Army - World War I
(C) O'Keefe, John J., U.S. Army - World War I
(C) O'Keefe, Thomas J., U.S. Army - World War I
(S) O'Kelley, Edward B., U.S. Army - World War II
(C) O'Kelley, Grover Cleveland, U.S. Marine Corps - World War I
(C) O'Kelly, Thomas, U.S. Army - World War I
(C) O'Kusky, Henry Joseph, Jr., U.S. Army - Vietnam War
(C) Olanson, Arthur W., U.S. Army - World War I
(S) Old, Archie J., U.S. Army Air Forces - World War II
(C) Oldfield, Willie A., U.S. Army - World War I
(S) Oldham, Richard G., U.S. Army Air Forces - World War II
(C) Olds, Arthur, U.S. Marine Corps - World War I
(C) Oldynski, Charles, U.S. Army - World War I
(S) Oleair, Joseph, U.S. Army - World War II
(C) O'Leary, Eugene B., U.S. Army Air Forces - World War II
(C) O'Leary, Joseph A., U.S. Army - World War I
(C) Olejnik, Frank, U.S. Army - World War I
(S) Oleson, Lloyd F., U.S. Army - World War II
(S) Oligny, Paul W., U.S. Army - World War II
(C) Oliphant, David A., U.S. Army - World War I
(C) Oliver, Clarence R., U.S. Army - World War I
(S) Oliver, Earl, U.S. Army - World War II
(C) Oliver, J. L., U.S. Army - Vietnam War
(C) Oliver, Mack O., U.S. Army - World War I
(C) Oller, Gerald W., U.S. Army - World War II
(C) Ollrich, Harry J., U.S. Army - World War I
(S) Olmstead, John M., U.S. Army - World War II
(C) Olsen, Eric S., U.S. Army - World War I
(C) Olsen, Fred, U.S. Army - World War I
(C) Olsen, Harold, U.S. Army - World War I
(C) Olsen, John J., U.S. Army - World War II
(C) Olsen, Joseph Enoch, U.S. Marine Corps - World War I
(C) Olsen, Olaf S., U.S. Army - World War I
(C) Olsen, Stanley R., U.S. Army - Interim Award
(S) Olsen, William B., U.S. Army - World War II
(S) Olson, Alfred E., U.S. Army - World War II
(S) Olson, Alvin G., U.S. Army - World War II
(S) Olson, Andrew T., U.S. Army - World War II
(S) Olson, Gordon B., U.S. Army - World War II
(C) Olson, Halbert E., U.S. Army - World War II
(S) Olson, Henry L., U.S. Army Air Forces - World War II
(C) Olson, John O., U.S. Army - World War I
(S) Olson, Julius B., U.S. Army - World War II
(C) Olson, Mandel, U.S. Army - World War I
(C) Olson, Roy C., U.S. Army - Philippine Insurrection
(C) O'Malley, George P., U.S. Army - World War I
(S) O'Mara, Leo E., U.S. Army - World War II
(S) O'Neal, James A., U.S. Army Air Forces - World War II
(C) O'Neal, James Lee, U.S. Army - World War I
(S) O'Neal, John DeWitte, U.S. Army - World War II
(C) O'Neil, Frank P., U.S. Army - World War I
(C) O'Neil, Mike, U.S. Army - World War I
(S) O'Neil, Walter C., U.S. Army - World War II
(S) O'Neill, Brian, U.S. Army Air Forces - World War II
(C) O'Neill, Daniel L., U.S. Army - Vietnam War
(C) O'Neill, James T., U.S. Army - World War I
(S) O'Neill, John T., U.S. Army - World War II
(S) O'Neill, Lawrence F., U.S. Army Air Forces - World War II
(C) O'Neill, Ralph Ambrose, U.S. Army Air Service (First Award) -
World War I
(C) O'Neill, Ralph Ambrose, U.S. Army Air Service (Second Award) -
World War I
(C) O'Neill, Ralph Ambrose, U.S. Army Air Service (Third Award) -
World War I
(C) O'Neill, William, U.S. Army - World War I
(S) Ong, Donald Clay, U.S. Army - World War II
(C) Ono, Thomas Yoshimi, U.S. Army - World War II
(C) Oosterbann, Dick, U.S. Army - World War I
(C) Opie, Hierome L., U.S. Army - World War I
(C) Oppenheim, Arlie C., U.S. Army - World War I
(C) Opper, Leonard M., U.S. Army - World War II
(C) Oquendo, Fruto James, U.S. Army - Vietnam War
(C) O'Quinn, Donald L., U.S. Army - Vietnam War
(C) Orcutt, Iver, U.S. Army - World War I
(C) Ord, Ralph Edward, U.S. Army - World War I
(C) O'Reilly, Anthony Paul, U.S. Army - Vietnam War
(C) O'Reilly, James F., U.S. Army - Spanish-American War
(C) Orig, Bruno R., U.S. Army - Korean War
(C) Orndorf, Douglas, U.S. Army - World War II
(S) Orosco, Earnest D., U.S. Army - World War II
(C) O'Rourke, Cornelius, U.S. Army - World War I
(S) O'Rourke, David J., U.S. Army - World War II
(S) O'Rourke, Edward J., U.S. Army Air Forces - World War II
(C) O'Rourke, James H., U.S. Army - World War I
(C) O'Rourke, John, U.S. Army - Spanish-American War
(C) O'Rourke, John P. (AKA: John T. Burke), U.S. Army - World War I
(S) Orr, Albert I., U.S. Army - World War II
(C) Orr, Edward, U.S. Army Air Service - World War I
(C) Orr, Robert H., U.S. Air Force - Korean War
(C) Orr, William F., U.S. Army Air Forces - World War II
(C) Orsini, Donald A., U.S. Army - Vietnam War
(S) Ortilano, Narcisco, U.S. Army - World War II
(C) Ortiz, Concepcion, U.S. Army - World War I
(C) Ortiz, Raymond, U.S. Army - Vietnam War
(C) Ortt, Horace F., U.S. Army - World War I
(C) Osborn, Morton, U.S. Army - World War I
(C) Osborne, Harry, U.S. Army - World War I
(S) Osborne, William Lloyd, U.S. Army - World War II
(C) Osmond, Frank W., U.S. Army - World War I
(C) Ostberg, Edwin J., U.S. Army - World War II
(S) Osterberg, Norman A., U.S. Army - World War II
(C) O'Sullivan, Christopher Jo, U.S. Army - Vietnam War
(C) O'Sullivan, John I., U.S. Army - Vietnam War
(S) Oswald, David Percy, U.S. Army - World War II
(C) Otake, Masanao, U.S. Army - World War II
(C) Otis, Glenn K., U.S. Army - Vietnam War
(C) Otis, Malcolm D., U.S. Army - Vietnam War
(C) Otomo, Bill M., U.S. Army - Korean War
(S) O'Toole, John Stephen, U.S. Army - World War II
(S) Ott, William H., U.S. Army - World War II
(C) Otte, Fred, U.S. Army - World War I
(C) Otterstrom, Rawland N., U.S. Army - Korean War
(C) Otto, Andrew C., Jr., U.S. Army - World War I
(C) Otto, George William, U.S. Army - Korean War
(C) Otto, William Herman, U.S. Marine Corps - World War I
(S) Ouellette, Aleck C., U.S. Army - World War II
(S) Ough, Webster James, U.S. Army - World War II
(C) Overmeyer, George J., U.S. Army - World War I
(C) Overton, John William, U.S. Marine Corps - World War I
(C) Overton, Macon C., U.S. Marine Corps (First Award) - World War I
(C) Overton, Macon C., U.S. Marine Corps (Second Award) - World War I
(C) Overweg, Roger Dale, U.S. Army - Vietnam War
(C) Owen, Albert E., U.S. Army Air Forces - World War II
(S) Owen, Franklin D., U.S. Army - World War II
(S) Owen, George A., U.S. Army - World War II
(C) Owen, James B., U.S. Army - Korean War
(S) Owen, William H., Jr., U.S. Army - World War II
(S) Owens, Alfred W., U.S. Army - World War II
(C) Owens, Dewey, U.S. Army - World War I
(C) Owens, Ellis, Jr., U.S. Army - World War I
(C) Owens, Frank A., U.S. Army - World War I
(C) Owens, Gilbert, U.S. Army - World War I
(C) Owens, John J., U.S. Army - World War I
(C) Owens, John T., U.S. Army - World War I
(S) Owens, Leonard W., U.S. Army - World War II
(C) Owens, Marion Pope "Dutch", U.S. Army Air Forces - World
War II
(C) Owens, Teddy, U.S. Army - World War I
(S) Oxford, Thomas E., U.S. Army - World War II
(S) Oxonian, Pedro, U.S. Army - World War II
