In 1915 , he was detailed to the Aviation Section , U.S. Signal Corps ( ASSC ) .
In 1915 , he sent to the Signal Corps Aviation School at Rockwell Field , California , for pilot training .
In 1915 , he was detailed to the Aviation Section , U.S. Signal Corps ( ASSC ) and sent to the Signal Corps Aviation School at Rockwell Field , California , for pilot training .