Siegfried Dombrowski

Siegfried Dombrowski (13 October 1916 - 20 June 1977) was an East German army officer who rose to the rank of "Oberstleutnant" (loosely, "Lieutenant colonel"). He combined this with his role as deputy chief-of-staff of Intelligence Administration of the East German military intelligence agency. On 5 August 1958, accompanied by his wife and children, along with a substantial sum of cash, he escaped to West Berlin. For the western intelligence services he subsequently turned out to be a highly valuable source of information about the organisational structures under which their eastern counterparts operated.