Lozano was one of the first Puerto Rican women to become a United States Army officer. According to retired Lt. Col. Marilla Cushman of the Women in Military Service for America Memorial Foundation, "She is certainly a pioneer for Puerto Rican women, one of the first 13 to be commissioned into the
United States Army Nurse Corps (USANC). Carmen and her 12 cohorts led the way for Puerto Rican women in the Army Nurse Corps. According to the U.S. Department of Veterans Affairs, in addition to her work as a translator, she also provided "her support to the patients who appreciated having someone to talk to who shared the same language." In 1945, Lozano was reassigned to the 359th Station Hospital of Ft. Read,
Trinidad and Tobago,
British West Indies, where she attended wounded soldiers who had returned from
Normandy,
France. According to Judith Bellafaire of the Women in Military Service for America Memorial Foundation, "Many appreciated being able to "talk out" their anxieties and nightmares," and according to the U.S. Army Medical Department Office of Medical History, "The Puerto Rican Army Nurses were applauded for their bilingual language abilities. Spanish-speaking patients expressed great appreciation for the nurses from their homeland that could speak and write letters for them in their native language." While in Trinidad, she decided that she would like to become a doctor after the war and took correspondence courses from
Louisiana State University. She met Lieutenant Joseph Dumler in Trinidad and they were married in the Base
Chapel. ==Later years==