During her tenure in the House, Smith developed a strong interest in issues concerning the military and national security. After being appointed to the House Naval Affairs Committee in 1943, she was assigned to the investigation of destroyer production, and made a 25,000-mile tour of bases in the South Pacific during the winter of 1944. She also became the first and only civilian woman to sail on a U.S. Navy ship during World War II. She became known as "Mother of the WAVES" after introducing legislation to create that organization. Although Congresswoman Smith was a strong supporter of women in the armed services, she did not write the legislation that created the special female military units during World War II. She did, however, champion the legislation that gave women permanent status in the military following the war.