Las Adelitas de Aztlán was an organization started by a group of women, including Gloria Arellanes and Gracie and Hilda Reyes, who left the Brown Berets in 1970. Their name was a tribute to the female fighters, or soldaderas, of the Mexican Revolution. Their creation was a response, in part, to moves by the Brown Berets which alienated female members, like a February 28, 1970 ad in La Causa which read: "The man we are looking for must have Huevos, a will to stand for what he believes."
Gloria Arellanes discusses the reasoning of why she named the group Las Adelitas de Aztlán saying in the book The Chicano Movement Testimonios Of The Movement, “I had come to learn more about the history of the Mexican Revolution of 1910 and was fascinated by the image of La Adelita, the female revolutionary who fought in the revolution… This was part of the Chicana search for historical role models.” (Pg 194-195). She continues to speak on the importance of Las Adelitas de Aztlán, saying that the group helped to give birth to Chicana feminism. As a group Las Adelitas de Aztlán discussed how they were talked to and treated as women, and talked about Machismo specifically the macho mentality. The group adopted the following slogan: “Porque somos una familia de hermana [Because we are a family of sisters]”.