[4] During World War I, she organized patients to knit and sew for a soldiers' relief charity.
[5] She testified against legislation regarding the registration of nurses at hearings held by the Massachusetts State Committee on Public Health.
[6] Cameron held the rank of First Lieutenant in the United States Army Nurse Corps during World War I.
[8] Cameron moved to California after the war, and worked as an army nurse in San Francisco and in the Philippines.
[9][10] She went to Japan on a medical relief mission following the 1923 Great Kantō earthquake,[11] and was chief of the occupational department at the Letterman Army Hospital at the Presidio of San Francisco when she spoke to the California Society of Educational Therapy in 1926.