 In the teeth of every sort of obstacle — both locally, and in the shape of impractical instructions from the Poles in exile in London — he and the sub-agents he organized provided masses of data, military, economic and political, which played a leading part in the planning of operation 'Torch', the Anglo-American invasion of Algeria and Morocco in November 1942.For his invaluable contributions to the Allied North African campaign, Słowikowski was on March 28, 1944, decorated with Britain's Order of the British Empire and received from General Jacob Devers, Deputy Commander-in-Chief of Allied Forces in North Africa, the American Legion of Merit.The ceremony was held on Algiers' "Place du Gouvernement".