In the film, Major Barbara (1941), Barbara, a Major in the Salvation Army, has been raised with her sister and brother by their mother. She is legally separated or divorced from the father, Andrew Undershaft, who nonetheless finances the lavish lifestyle of his family. Even Barbara, the idealist Christian evangelical, lives on her father’s armaments wealth. Yet when she meets him after several years, she leaves the Salvation Army after Andrew and an alcohol producer donate large sums. Although Barbara recognizes that the Army in London needs the money, she believes that the Army has sold out because providing weapons of death and alcohol are sinful. “What price salvation, now?” a customer at the Army’s soup kitchen asks Barbara after she had taken off her Army pin and given it to her father. Barbara is not willing to continue with the Christian organization because in her mind it has sold out even though it admittedly needs the donations to survive. But has the Army sold out? Furthermore, does Barbara sold out in using her father's business to convert workers. Ironically, that may be more ethical than the Army's approach to saving souls.
The full essay is at "Major Barbara."
