Colonel Oscar L. Faulkner was commissioned a Field Artillery Officer upon graduation from Officer Candidate School 12 August 1949. His first duty assignment was as a Personnel Officer, Headquarters, 51Oth Field Artillery Battalion, US Forces, Salzburg, Austria. | His subsequent duty assignments include: Executive Officer, Battery C, 510th Field Artillery Battalion, US Forces, Austria; Battery Commander, Battery B. 14th Anti-Aircraft Battalion, Fort Myer, Virginia; Field Artillery Advisor, U.S. Military Mission Iran, Shariz, Iran; Battery Commander, Battery C, 321st Artillery, 101st Airborne Division, Fort Campbell, Kentucky; Assistant S-3, Headquarters, 101st Airborne Division Artillery, Fort Campbell, Kentucky; Guided Missle Systems Officer, National Security Agency, Fort Meade, Maryland; Plans Officer, Plans and Operation Division, Headquarters, Allied Forces South, Naples, Italy; Battalion Commander, 6th Battalion, 21st Artillery, 5th Infantry Division, Fort Carson, Colorado; Executive Officer, 9th Infantry Division, Republic of Vietnam; Battalion Commander, 3d Battalion, 82nd Artillery, Americal Division, Republic of Vietnam; Chief, Manpower Division, Officer of the Joint Chief of Staff, Washington, D.C.; and Senior Army Advisor, 122nd Army Reserve Command, Fifth U.S. Army, Little Rock, Arkansas.