c1944 Envelope to a Dutch Officer Capt. A Rentse, Det. 404, Adv HQ SEAC, Kandy, Ceylon from Lieut-Comdr., C.T. de B. Whitehouse R.I. N.R. bearing uncancelled India ½a + 1½a +1½a & with Indian PC 90 Opened By Examiner label tied lozenge Passed /DHA – 9 ………..
Det. 404 was a unit within the Office of Strategic Services (O.S.S. later to become the C.I.A.) & was a secret USA Government organisation that used agents to penetrate enemy occupied territory & gather intelligence etc. Capt. Rentse was a Dutch officer serving with the O.S.S. & it is believed that Detachment 404 was operational in Thailand & Burma.