“Regardless of whether France enters the war as a result of ‘Case Green’ or whether she makes the opening move of the war simultaneously with Czechoslovakia, in any case the mass of the German offensive formations will, in conjunction with the Army, first deliver the decisive blow against Czechoslovakia.” (R-150)
By mid-summer direct and detailed planning for Case Green was being carried out by the Luftwaffe. In early August, at the direction of the Luftwaffe General Staff, the German Air Attache in Prague reconnoitered the Freudenthal area of Czechoslovakia, south of Upper Silesia, for suitable landing grounds. This action is disclosed by a report of the Luftwaffe General Staff, Intelligence Division, dated 12 August 1938 (1536-PS). This was a Top Secret document, for General Officers only, of which only two copies were made. Attached as an enclosure was the report of Major Moericke, the German air attache in Prague, dated 4 August 1938. The first four paragraphs of the enclosure read:
“I was ordered by the General Staff of the Air Force to reconnoitre the land in the region Freudenthal/Freihermersdorf for landing possibilities.
“For this purpose I obtained private lodgings in Freudenthal with the manufacturer Macholdt, through one of my trusted men in Prague.
“I had specifically ordered this man to give no details about me to M, particularly about my official position.
“I used my official car (Dienst Pkw) for the journey to Freudenthal, taking precautions against being observed.” (1536-PS)
By 25 August the imminence of the attack on Czechoslovakia compelled the issuance by the Luftwaffe of a detailed intelligence memorandum entitled “Extended Case Green,” which consisted of an estimate of possible action by the Western Powers during the attack on Czechoslovakia (375-PS). This Top Secret memorandum of the Intelligence Section of the Luftwaffe General Staff is dated at Berlin, 25 August 1938. Based on the assumption that Great Britain and France will declare war on Germany during Case Green, this study contains an estimate of the strategy and air strength of the Western Powers as of 1 October 1938, the target date for Case Green. The first two sentences read as follows:
“The basic assumption is that France will declare war during the Case Green. It is presumed that France will only decide upon war if active military assistance by Great Britain is definitely assured.” (375-PS)
F. Negotiations with Italy and Hungary about Case Green.
Knowledge of pending action against Czechoslovakia was not confined to a close circle of high officials of the Reich. During the summer Germany’s allies, Italy and Hungary, were apprised by one means or another of the plans of the Nazi conspirators. A captured document from German Foreign Office files contains a confidential memorandum of a conversation with the Italian ambassador, Attolico, in Berlin on 18 July 1938 (2800-PS). At the bottom is a handwritten note, headed “For the Reichsminister [Ribbentrop] only.” This note reads: