 Flight Warrant Officer Candidates had to be between the ages of 18 and 28 when they began training, though they could begin training if they were about to have their 18th or hadn't yet had their 29th birthday.Army commissioned and warrant officer pilots were under the Transportation Corps from 1947 to 1983, after which Army Aviation had its own branch.They were only allowed artillery spotting, reconnaissance, and casualty evacuation roles, as the Air Force had all other roles due to the Key West Agreement of 1948.