International Boy Scouts, Troop 1 1963 and 1965 he was awarded the first of the Korea Scout Association's distinguished service awards, also called the Silver Cuckoo, in 1966. Mittwer participated as a staff member at the 12th World Scout Jamboree in 1967 in Idaho, U.S.A. and, at the conclusion of the Jamboree and in connection with the 21st World Scout Conference held in Seattle, Washington, he was presented a Scout Friendship Certificate by the WOSM in recognition of his contribution to international Scouting. He initiated an exchange program between the Incheon District of the Korea Scout Association and the Kanagawa Council of the Boy Scouts
The Scout Association Boy Scouts Association started branches itself in parts of British Empire. The Boy Scouts Association's "Headquarters" in London was renamed "Imperial Headquarters" (IHQ). The Boy Scouts International Bureau was formed in 1920 and became fully functional under the International Conference of the Boy Scout Movement in 1922. Subsequently, The Boy Scouts Association branches in the Dominions of Canada, Australia, New Zealand, Newfoundland, and South Africa were given the option of being "separately represented" with the Boy Scouts International Bureau, but chose instead to remain under IHQ control. Over time, many of the branches of The Scout Association became direct members