Dissolution into other agencies On September 20, 1945, President Truman signed Executive Order 9621, terminating the OSS. Due to administrative error, the order only allowed the agency ten days to close. The State Department took over the Research and Analysis Branch (R&A); it became the Bureau of Intelligence and Research, The War Department took over the Secret Intelligence (SI) and Counter-Espionage (X-2) Branches, which were then housed in the new Strategic Services Unit (SSU). Brigadier General John Magruder (formerly Donovan's Deputy Director for Intelligence in OSS) became the new SSU director. He oversaw the liquidation of the OSS and managed the institutional preservation of its clandestine intelligence capability.George C. Chalou, ed. The Secret War (1992), pp 95-97.
Dissolution into other agencies On September 20 1945 President Truman signed Executive Order 9621 terminating the OSS Due to administrative error the order only allowed the agency ten days to close The State Department took over the Research and Analysis Branch (R&A); it became the Bureau of Intelligence and Research The War Department took over the Secret Intelligence (SI) and Counter-Espionage (X-2) Branches which were then housed in the new Strategic Services Unit (SSU) Brigadier General John Magruder (formerly Donovan's Deputy Director for Intelligence in OSS) became the new SSU director He oversaw the liquidation of the OSS and managed the institutional preservation of its clandestine intelligence capabilityGeorge C Chalou ed The Secret War (1992) pp 95-97