Following the Englandspiel, whereby the Germans successfully infiltrated the Dutch resistance, the Dutch government in exile in the spring of 1944 established the BBO as a new secret service. The agency was the successor of the Bureau Militaire Voorbereiding Terugkeer, which in 1942 had in turn replaced the Bureau Voorbereiding van de Terugkeer naar Nederland en het Herstel van het Wettig Gezag Aldaar. In addition to the BBO, the Dutch also operated a second secret service, the Bureau Inlichtingen, which focused on espionage and intelligence gathering. On 13 March 1944, the Dutch government in exile appointed a retired general major, Johan Willem van Oorschot, to head the BBO. The day-to-day operations were run by Kas de Graaf. Between 31 March 1944 and 23 April 1945, a total of 70 BBO agents parachuted into the Netherlands, at least 17 of which were killed. BBO agents arranged a total of 211 weapons and supplies droppings at 86 different drop sites. Following the Allied liberation of the Netherlands, an office of the BBO was established in Utrecht in May 1945. The office, led by Kas de Graaf, was tasked with investigating possible German infiltration of the BBO, among others. On 3 December 1945, the BBO was placed under the command of the chief of the general staff. The Utrecht office was closed on 1 March 1946, followed by the London headquarters on 1 June of that year.
Leonardus Theodorus Cornelis Andringa, Pieter Arnoldus Arendse, Klaas van der Bor, Cornelis Carel Braggaar, Johannes Jan Cornelis Buizer, Joseph Bukkens, Johannes Jan Cornelis, Cees Droogleever Fortuyn, Gerard John van Hemert, Jan Charles Hofstede, George Jambroes, Roelof Christiaan Jongelie, Barend Klooss, Meindert Koolstra, Willem Johan Niermeijer, Gerrit van Os, Evert Radema, George Lodewijk Ruseler, Hendrik Johannes Sebes, Horst Reinder Steeksma, Thijs Taconis, Pieter van der Wilden, Willem van der Wilden
Op 7 September 1944 at Mauthausen:
Aart Alblas, Arnoldus Albert Baatsen, Karel Willem Adriaan Beukema toe Water, Pieter Cornelis Boogaart, Oscar de Brey, Johanes Cornelis Dane, Jan Emmer, Johannes Henricus Marie de Haas, Jerry van Hemert, Cornelis Eliza van Hulsteijn, Pieter Kamphorst, Meindert Koolstra, Arie Johannnes de Kruyff, Johannes Hermanus Arnoldus Maria ter Laak, Antoon Berend Mink, Willem Johan Niermeyer, Michiel Pals, Laurentius Maria Punt, Gozewin Hendrik Gerard Ras, Hendrik Reinder Steeksma, Ivo van Uijtvanck, Toon Wegner