In a lecture delivered by Jodl on 7 November 1943, he sets out his views, two and a half years later on the action taken in April, 1941. In Paragraph 11 he stated:
“What was, however, less acceptable was the necessity of affording our assistance as an Ally in the Balkans in consequence of the ‘extra-turn’ of the Italians against Greece. The attack, which they launched in the autumn of 1940 from Albania with totally inadequate means was contrary to all agreement but in the end led to a decision on our part which—taking a long view of the matter—would have become necessary in any case sooner or later. The planned attack on Greece from the North was not executed merely as an operation in aid of an ally. Its real purpose was to prevent the British from gaining a foothold in Greece and from menacing our Roumanian oil area from that country.” (L-172)
F. Summary.
To summarize: The invasion of Greece was decided on at least as early as November or December 1940 and was scheduled for the end of March or the beginning of April, 1941. No consideration was at any time given to any obligations under treaties or conventions which might make such invasion a breach of International Law. Care was taken to conceal the preparations so that the German Forces might have an unsuspecting victim.
In the meanwhile, Yugoslavia, although to be liquidated in due course, was clearly better left for a later stage. Every effort was made to secure her cooperation for the offensive against Greece, or at least to ensure that she would abstain from any interference.
The coup d’état of General Simovic upset this plan and it was then decided that, irrespective of whether or not his Government had any hostile intentions towards Germany, or even of supporting the Greeks, Yugoslavia must be liquidated.
It was not worth while to the Nazis to take any steps to ascertain Yugoslavia’s intentions, for it would be so little trouble, now that the German troops were deployed, to destroy her militarily and as a national unit. Accordingly, in the early hours of Sunday morning, 6 April 1941, German troops marched into Yugoslavia without warning and into Greece simultaneously. The formality was observed of handing a note to the Greek Minister in Berlin, informing him that the German forces were entering Greece to drive out the British. M. Koryzis, the Greek Minister, in replying to information of the invasion from the German Embassy, replied that history was repeating itself and that Greece was being attacked by Germany in the same way as by Italy. Greece returned, he said, the same reply as it had given to the Italians in the preceding October.
G. The Pattern of Aggression.
There is one common factor which runs through the whole of the Nazi aggressions. It is an element in the diplomatic technique of aggression, which was used with singular consistency, not only by the Nazis themselves, but also by their Italian friends. Their technique was essentially based upon securing the maximum advantage from surprise, even though only a few hours of unopposed military advance into the country of the unsuspecting victim could thus be secured. Thus, there was, of course, no declaration of war in the case of Poland.
The invasion of Norway and of Denmark began in the small hours of the night of April 8-9 1940, and was well under way as a military operation, before the diplomatic explanations and excuses were presented to the Danish Foreign Minister, at 4:20 a. m. on the morning of the 9th, and to the Norwegian Minister, between half past four and five on that morning.