On July 30 , 1920 , he was transferred .
On July 30 , 1920 , he was promoted to the permanent rank of colonel , Air Service , with date of rank from July 1 , placing him first in seniority among all Air Service branch officers .
On July 30 , 1920 , he was transferred and promoted to the permanent rank of colonel , Air Service , with date of rank from July 1 , placing him first in seniority among all Air Service branch officers .