Original: Ten delegates, among them Louis Haefliger (Camp Mauthausen), Paul Dunant (Camp Theresienstadt) and Victor Maurer (Camp Dachau), accepted the assignment and visited the camps.
Simplified: Ten delegates, among them Louis Haefliger (Camp Mauthausen), Paul Dunant (Camp Theresienstadt) and Victor Maurer (Camp Dachau), visited the camps.