During World War I , Parkman was a captain in the 76th and 80th Infantry Divisions .
Parkman graduated from Harvard College in 1915 and attended Harvard Law School for two years before leaving to serve in the United States Army .
During World War I , Parkman was a Parkman in the 76th and 80th Infantry Divisions .
Parkman graduated from Harvard College in 1915 and attended Harvard Law School for two years before leaving to serve in the United States Army .