M. PAUL-BONCOUR, MINISTER FOR WAR,
TO M. HERRIOT, MINISTER OF FOREIGN AFFAIRS.
D. No. 1100 SAE 2/11. Secret. Paris, August 13, 1932.
I have had the honor on several occasions to draw your attention to the numerous abuses committed by Germany in the application of the agreements relating to the entry of elements of the Reichswehr into the demilitarized zone.
The German Government has never taken account of the observations made to it on this subject. Moreover, its attitude in this matter seems to prove that it is determined to gradually resume its freedom of military action in the demilitarized zone, in order to fully establish its territorial sovereignty there.
It is therefore logical to think that, either that it exploits possible internal incidents that the political situation in Germany makes it possible to envisage in the Rhine area, or even that it does not have recourse to this pretext, the Reich will, in in the more or less near future, to enter the demilitarized zone with armed personnel other than those which it has been authorized since 1926 to maintain there (4).
What are the provisions of the diplomatic texts relating to a possible entry of German armed forces into the demilitarized zone?
The Treaty of Versailles (arts. 42 and 43) clearly prohibits any presence, permanent or temporary, of armed forces in the zone.
The Rhineland Pact guarantees compliance with the provisions of these articles and recognizes our right of self-defence. But it restricts our full freedom of action in the sense that the finding of a contravention of Articles 42 and 43 must be brought before the Council of the League of Nations.
CDA letter no. 121 of November 8, 1929 takes note of the German government's declaration of September 13, 1929 "not to allow Reichswehr units to enter the delimited zone without having, according to the precedents already in existence, put in touch with the governments concerned”.
It therefore admits the principle of the possible entry of Reichswehr units.
The Paris agreements of January 10, 1930 admit that exceptional circumstances may make it necessary to send temporary police reinforcements to the area. This dispatch must be immediately notified to the governments concerned if it involves exceeding by at least two hundred men the maximum strength provided for the police in the demilitarized zone.
By what methods could the Reich introduce additional armed forces into the demilitarized zone?
The German government, if it wishes to respect the agreements concluded, can await the event of disturbances in the zone before introducing reinforcements of the police or Reichswehr units under the conditions provided for by the said agreements.
It can also act clandestinely by reinforcing its police force in the large centres.
Finally he can, one day, openly resume, of his own free will, his entire freedom of action and introduce into the zone new armed, police or Reichswehr forces to the extent corresponding to his designs.
The introduction, even temporarily, of additional armed forces into the demilitarized zone would entail certain dangers for our security.
a. In the first case: disturbances in the area; the state of siege being declared, the zone would pass under the orders of the military authority. The latter could thus, openly, take on the spot a whole series of measures falling within the “material mobilization facilities”, measures which are formally prohibited by the Treaty of Versailles and which can only be taken, in normal times, clandestinely.
On the other hand, one can be certain that the Reich would subsequently employ all possible means to maintain in the demilitarized zone the additional forces which would have entered it. It suffices, to be convinced of this, to recall the precedent of the Ruhr (April 1920). Under the pretext of repressing communist troubles in this region, and although it had already been exceptionally authorized to leave 17,000 soldiers there for the maintenance of order, the German government introduced there, in spite of the allies, new troops of the Reichswehr. After a very rapid repression, he claimed to maintain these reinforcements in the Ruhr. To compel him to withdraw them, it took the seizure by the allies of new territorial pledges and their unanimous agreement at the conference of San Remo.
We can be sure that at the present time the German government would demand the maintenance of such reinforcements with much more energy and tenacity than at a time when the allies occupied the whole left bank of the Rhine.
b. In the event of a clandestine reinforcement of the police in the large centres, the determination of the numbers thus introduced will be practically very difficult, if not impossible.
c. Finally, in the event that the Reich resumed its full and entire freedom of action, and openly introduced units of the Reichswehr into the zone, the dangers previously reported would have a character of much more immediate and marked seriousness, even if this reinforcement had to be done in the form of weak garrisons far from each other (battalion, battery, isolated squadron), so as not to constitute a "gathering" nor a threat of "aggression".
What would be, in the various eventualities envisaged, our possibilities of making the Reich respect the demilitarized character of the Rhine region?
Whether it is the introduction of unauthorized forces into certain areas of the zone, the maintenance of additional forces beyond the expected time limits, or the general re-establishment of Reichswehr garrisons throughout the zone, recourse to the Council of the League of Nations seems to be the obligatory preliminary procedure for enforcing the treaties and agreements in force, if however these facts are not considered as an "unprovoked act of aggression", making it possible to bring into play the "legitimate defence" provided for in article 2 of the Locarno agreements.
This procedure can only be long and delicate. It will likely raise the issue of equal rights again.
During the negotiations, and whatever their subsequent outcome, the dangers mentioned above will remain and are likely to aggravate the situation.
Under these conditions, what could our attitude be? Would this attitude be different depending on whether it was a question of the introduction into the demilitarized zone of elements from Schupo or, on the contrary, from the Reichswehr? And according to whether the arrival of these elements would be consecutive to disorders or that it would be the fact of a clandestine reinforcement, or finally that it would be the result of a premeditated decision of Reich to take again its complete freedom? What military repercussions would the events referred to above be likely to have in the various cases?
Because of the importance of the problems which may thus arise, perhaps quickly, I have the honor to ask you to kindly let me know your point of view in the event that events of this order should occur, in order to allow me to study the possible repercussions that their solution could cause in the military field.