The Requirements Office (RO) was a sub rosa Military Assistance Advisory Group set up during the Laotian Civil War. It was established in September 1962 in the United States embassy in Laos, as a replacement for a similar preceding unit, the Programs Evaluation Office (PEO). The RO's role was furnishing the Royal Lao Army with munitions and supplies to support their war effort against the People's Army of Vietnam. The RO would eventually be absorbed into the Defense Attachés Office on 8 August 1973.