Man-woman relationships World War, 1914-1918 Triangles (Interpersonal relations) 4 Aerial operations 3 Fighter pilots 3 Guerra Mundial I, 1914-1918 3 Relaciones hombre-mujer 3 more ... Adultery 2 Bachelors 2 Campaigns 2 Collaborationists 2 Feature films 2 Infantry 2 Passenger accommodation 2 Steamboats 2 Video recordings for the hearing impaired 2 Warships 2 Ambition 1 Aristocracy (Social class) 1 Aviadores 1 Brothels 1 Campañas 1 Censorship 1 Conduct of life 1 Depressions 1 Employees 1 Employment 1 Enfermeras 1 Feminism 1 Foreign films 1 less ...