During World War II , he served in both staff and intelligence positions , reaching the rank of brigadier in his early thirties .
Before entering politics , Powell was a classical scholar , becoming a full professor of ancient Greek at the age of 25 in Australia .
During World War II , Powell served in both staff and intelligence positions , reaching the rank of brigadier in Powell 's early thirties .
Before entering politics , Powell was a classical scholar , becoming a full professor of ancient Greek at the age of 25 in Australia .