 Krieps was also the co-founder of the "Association des Luxembourgeois" in the United Kingdom.For many years, and until his death, he was president of the "Association des Anciens Combattants de la Guerre 1940-1945 et des Forces des Nations Unies" and the vice-president of the "Fédération Mondiale des Anciens Combattants".Up until his death, he was also working on the preparations for the 80th anniversary of the Armistice of 1918.