Major Barbara is a three-act English play by George Bernard Shaw, written and premiered in 1905 and first published in 1907. The story concerns an idealistic young woman, Barbara Undershaft, who is engaged in helping the poor as a Major in the Salvation Army in London. For many years, Barbara and her siblings have been estranged from their father, Andrew Undershaft, who now reappears as a rich and successful munitions maker. Undershaft, the father, gives money to the Salvation Army, which offends Major Barbara, who does not want to be connected to his "tainted" wealth. However, the father argues that poverty is a worse problem than munitions, and claims that he is doing more to help society by giving his workers jobs and a steady income than Major Barbara is doing to help them by giving them bread and soup. Shaw wrote this play before society had fully experienced the vast human cost exacted by industrially produced weapons in modern warfare, in World Wars I and II.
An officer of The Salvation Army, Major Barbara Undershaft, becomes disillusioned when her Christian denomination accepts money from an armaments manufacturer (her father) and a whisky distiller. She eventually decides that bringing a message of salvation to people who have plenty will be more fulfilling and genuine than converting the starving in return for bread.
Although Barbara initially regards the Salvation Army's acceptance of Undershaft's money as hypocrisy, Shaw did not intend that it should be thought so by the audience. Shaw wrote a preface for the play's publication, in which he derided the idea that charities should only take money from "morally pure" sources. He points out that donations can always be used for good, whatever their provenance, and he quotes a Salvation Army officer, "they would take money from the devil himself and be only too glad to get it out of his hands and into God's".
Lady Britomart Undershaft, the daughter of a British earl, and her son Stephen discuss a source of income for her grown daughters Sarah, who is engaged to Charles Lomax, and Barbara, who is engaged to Adolphus Cusins (a scholar of Greek literature). Lady Britomart leads Stephen to accept her decision that they must ask her estranged husband, Andrew Undershaft, for financial help. Mr. Undershaft is a successful and wealthy businessman who has made millions of pounds from his munitions factory, which manufactures the world famous Undershaft guns, cannons, torpedoes, submarines and aerial battleships.