Class conflict in the story?

As a socialist, Shaw believed in the equality of all people and he abhorred discrimination based on gender or social class. These beliefs are evident in the relationships portrayed in Arms and the Man. Shaw allows a maid to succeed in her ambitions to better herself by marrying Sergius, an officer and a gentleman. This match also means that Sergius has developed the courage to free himself from the expectations of his class and instead marry the woman he loves. The silliness of Catherine's character is used to show the illogical nature of class snobbery, as she clearly makes divisions between her family and the servants, even though, or perhaps because, the Petkoffs themselves have only recently climbed the social ladder. The play also attacks divisions of rank, as Captain Bluntschli has leadership abilities that the superior-ranking officers, Majors Petkoff and Saranoff, do not have, illustrating the fact that ability has little to do with rank. Ability also has little to do with class, as exemplified by the character of Nicola, who is declared the ablest, and certainly the wiliest, character in the play.