First came on this movie while reading "The Arms of Krupp" by William Manchester ISBN: 0736607161 the paragraph that mentions this film is:
"Yet war ministers abroad were still very much aware of the family. So were the critics, as George Bernard Shaw demonstrated brilliantly in December 1905 when his "Major Barbra", a thinly veiled satire largely based on the Krupps, opened in London. In the play Barbara is substituted for Bertha, the head munitions family is named Sir Andrew Undershoot, and Bertha-Barbara is given a pacifist brother called Stephen."
The movie its self has some "Major" actors as Windy Hiller, Rex Harrison, and Robert Morley.