Lucy Hewitt, Marion Post - Public domain photograph

Photograph shows an Emergency Services Corps camp on the estate of Mr. and Mrs. Edward Hewitt, Passaic County, near Erskine, New Jersey, where young women were trained in shooting, military drills, hiking and other activities by Army officers in 1916. Depicted are Lucy Hewitt, a daugher of the Hewitts, playing the bugle and Marion Post playing the drum.(Source: Flickr Commons project, 2014 and New York Times, June 1, 1916)