On 12 May 1949, General Pierre Koenig, Military Governor and Commander-in-Chief of the French Zone of Germany, General Lucius D. Clay, Military Governor and Commander-in-Chief of the United States Zone of Germany, and General Sir Brian Hubert Robertson, Military Governor and Commander-in-Chief of the British Zone of Germany, promulgate the Occupation Statute of Germany in Bonn.

On 12 May 1949 in Bonn, General Pierre Koenig, Military Governor and Commander-in-Chief of the French Zone of Germany, General Lucius D. Clay, Military Governor and Commander-in-Chief of the United States Zone of Germany, and General Sir Brian Hubert Robertson, Military Governor and Commander-in-Chief of the British Zone of Germany, adopt the Charter of the Allied High Commission for Germany for the exercise, from 21 September 1949, of Supreme Allied Authority in the Federal Republic of Germany under the leadership of three High Commissioners (André François-Poncet, John McCloy and Sir Brian Hubert Robertson).

On 21 September 1949, André François-Poncet, French High Commissioner for Germany, John McCloy, US High Commissioner for Germany, and Sir Brian Hubert Robertson, UK High Commissioner for Germany, declare the entry into force of the Occupation Statute of Germany and of the tripartite control machinery of the Allied High Commission.

On 21 September 1949, the Allied High Commission for Germany promulgates Laws 1 to 7, published the same day as the Declaration concerning the entry into force of the Occupation Statute of Germany.

In 1949, the French, British and US Governments issue a memorandum on the exercise of powers and responsibilities of the three Western occupying powers in Germany after the creation of the Federal Republic of Germany (FRG).

In 1949, Georges Bidault, French Foreign Minister, Ernest Bevin, British Foreign Secretary, and Dean Acheson, US Secretary of State, send a note to the Parliamentary Council in Bonn in which they set out some of the political decisions taken concerning the future Federal Republic of Germany (FRG).

In 1949, Georges Bidault, French Foreign Minister, Ernest Bevin, British Foreign Secretary, and Dean Acheson, US Secretary of State, send their views on the Basic Law of the new Federal Republic of Germany (FRG) to Pierre Koenig, Military Governor and Commander-in-Chief of the French Zone of Germany, General Lucius D. Clay, Military Governor and Commander-in-Chief of the United States Zone of Germany, and General Sir Brian Hubert Robertson, Military Governor and Commander-in-Chief of the British Zone of Germany.

Nach der Gründung der Bundesrepublik Deutschland (BRD) und der Deutschen Demokratischen Republik (DDR) im Jahre 1949 bemüht sich der erste Bundeskanzler Konrad Adenauer, die Souveränitätsrechte der BRD und ihrer Länder gegenüber den Kompetenzansprüchen der Alliierten Hohen Kommission (AHK) zu verteidigen, die am 12. Mai 1949 von den drei westlichen Besatzungsmächten in Deutschland eingerichtet wurde.