Sometime in March 1937, senior Abwehr officer Paul Thümmel provided a vast array of significant information about the German intelligence services to Czech agents who in turn, forwarded the data to SIS London. Thümmel also delivered details over "military capabilities, and intentions" as well as "detailed information on the organization and structure of the Abwehr and SD along with "the near-complete order of battle of the Wehrmacht and Luftwaffe, and German mobilization plans"; and, later "he gave advanced warnings of the German annexation of the Sudetenland as well as the invasions of Czechoslovakia and Poland."[31]