<human>: Does "In the 1920s and 1930s, air power theorists Giulio Douhet and Billy Mitchell espoused the idea that air forces could win wars by themselves, without a need for land and sea fighting." correctly answer the question of In the 1920's and 30's to theorist thought wars could be won by air forces what were their names?
OPTIONS:
- yes
- no
<bot>: yes