History of military intelligence - period of the First Republic
On base of above mentioned, strain and power, which the Czechoslovak Counter-Intelligence Service had to deal with in the period and the limited devices it disposed of are clear. For all that, we can tell that Czechoslovak Military Defense Intelligence operated successfully on the whole between the two world wars. It is not possible to know the exact number of cases the service was dealing with, however, cases of high treason and espionage were counted to 2000, which is considerable number. However, even this number represented just a part of realized activities conducted against independent Czechoslovakia in the period of the First Republic.
In connection with activities of the Czechoslovak military intelligence we cannot exclude two medially known and at the same time the most important cases in individual main courses of activities.
The first one is a case of A-54 agent. This man was a member of the Third Reich Paul Thümmel placed in aussenstelle Chemnits, where he had to be a commander, to fulfill espionage tasks. Thümmel disposed of good political relations originating from his post of foundation member of the SA. He contacted the 2nd Department of the Main Staff of the Czechoslovak Army to offer a cooperation on paper. He did that from the financial reason. On one side the contribution of A-54 to the Czechoslovak intelligence is being overstated, on the other side an opinion that he was a German Abwehr agent of operation camouflage (deceiving and misinformation) occurred. We cannot pursue this case widely, however, we can state that the importance of A-54 for the 2nd Department of the Main Staff was high. For example, he told the Czechoslovak intelligence the exact date and duration of occupation of Czechoslovakia in March 15, 1939, information on the core of the first German offensive in France, German attacking Holland, information of German observers on Finland-German war, preparations and main points of operation against Yugoslavia, German information on Soviet Air Force, reported on stopping the preparations of the German invasion in the Great Britain, etc. For the 2nd Department of the Main Staff, he handed, among others, information on mobilization network against Czechoslovakia, list of receivers of German radio stations, organization of the German Intelligence, provided conclusive espionage material coming from the Third Reich agents from Czechoslovakia to abwehrstelle Dresden, handed a map of Czechoslovakia with places plotted in on our area, where agents of the German espionage network operated. The Department even searched for names of individual agents active against Czechoslovakia. The most effective activity in favor of the Czechoslovak Intelligence was the one he did from spring 1937 to occupation of Czechoslovakia in 1939. However, he worked also in war in cooperation with the Czechoslovak domestic resistance. A-54 was showed up and executed in the Terezín fort by Gestapo.