 The Americans attacked, making as much noise as possible to make it seem like they had been reinforced.They drove the Bolsheviks back and captured a building full of small arms ammunition; when they set this on fire the sound of the exploding rifle ammunition seems to have convinced the Bolsheviks that they were outnumbered.When Cudahy's troops reached Upper Tulgas, the few Bolshevik snipers left surrendered.