The need for the regulations first caught public attention after the five Sullivan brothers were all killed when the USS Juneau (CL-52) was sunk during World War II,[1] and was enacted as law in 1948. No peacetime restriction was in place until 1964 during the Vietnam War; in 1971, Congress amended the law to include not only the sole surviving son or daughter but also any son or daughter who had a combat related death in the family. Since then, each branch of the military has made its own policies with regard to separating immediate family members.