To spread their ideology to the world and to become undisputed
"The movement gained new support" although real change in Civil Rights legislation wouldn't come until the 1960s. Still, immediately after the war the Army was de-segregated.
When Dwight Eisenhower became the president of the United States, he mainly emphasized the importance of army intelligence, due to this, he focuses on innovating technologies to enable the Central Intelligence Agency to gather more information about the USSR and its allies during the course of the Cold War.