Women in the Vietnam War were active in a large variety of roles, making significant impacts on the War and with the War having significant impacts on them. Several million Vietnamese women served in the military during the War, particularly in the National Liberation Front of South Vietnam (also known as the Viet Cong), with the slogan "when war comes, even the women must fight" being widely used. These women made vital contributions on the Ho Chi Minh trail, in espionage efforts, medical care, logistical and administrative work, and, in some cases, direct combat against opposing forces.