The first contingent of South Korean troops arrives in Saigon. Although assigned to non-combat duties, they came under fire on April 3. The South Korean contingent was part of the Free World Military Forces, an effort by President Lyndon B. Johnson to enlist allies for the United States and South Vietnam. By securing support from other nations, Johnson hoped to build an international consensus behind his policies in Vietnam. The effort was also known as the "many flags" program. By the close of 1969, there were over 47,800 Korean soldiers actively involved in combat operations in South Vietnam. Seoul began to withdraw its troops in February 1972.