In 1977, Singlaub was relieved from his position as Chief of Staff of U.S. forces in South Korea after criticizing President Jimmy Carter's proposal to withdraw U.S. troops from the Korean peninsula in an interview with the Washington Post.

[1] After graduating from Van Nuys High School in 1939, he attended the University of California, Los Angeles,[1] but abandoned his studies in 1943 to begin military service.

On August 27, before the formal Japanese surrender, he parachuted onto Hainan Island, China, commanding an eight-member team, to arrange the evacuation of US, Australian and Dutch prisoners of war being held there.

[5] After his time in Korea, Singlaub headed CIA operations in postwar Manchuria during the Chinese Communist revolution, managed the secret war along the Ho Chi Minh trail in the Kingdom of Laos and Vietnam, worked with the Contras in Nicaragua, and Afghan resistance during the Soviet invasion of Afghanistan.

[7] In 1977, while Singlaub was chief of staff of U.S. forces in South Korea, he publicly criticized President Jimmy Carter's proposal to withdraw U.S. troops from the Korean peninsula.

[8][9][10] Less than a year later, Singlaub again publicly questioned President Carter's national security policies, this time during a lecture at Georgia Tech, and was forced to retire on June 1, 1978.

[15] The WACL was described by former member Geoffrey Stewart-Smith as allegedly a "largely a collection of Nazis, Fascists, anti-Semites, sellers of forgeries, vicious racialists, and corrupt self-seekers."

"[citation needed] Congressman Henry J. Hyde (Judiciary, Foreign Affairs, and Intelligence Committees), described Singlaub as "a brave man, a thorough patriot, and a keen observer"; someone who had been "in the center of almost every controversial military action since World War II."

Singlaub was President Reagan's administrative chief liaison in the Contra supply effort to oppose Moscow's and Fidel Castro's advances in El Salvador and Nicaragua during the Cold War and their support for armed Marxist revolutionary guerrilla movements.

He often met on Capitol Hill with members of the U.S. Congress, including Congressman Charlie Wilson (D-TX) about U.S. support and funding for the Contras and anti-communist resistance forces in Afghanistan opposed to the Red Army invasion of Kabul in 1979.

[23] The New York Times critiqued the organization as a money-maker for its founders rather than for veterans, described it as an "intolerable fraud" and "among a dozen military-related charities given a grade of F in a study last December by the American Institute of Philanthropy, a nonprofit watchdog group.