See his Hornblower Companion (1964).
A forester is also a title used widely during Medieval times. The Forester usually held a position equal to a sheriff or local law enforcer. He was responsible for patrolling the woodlands on a lord or noble's property. His duties included negotiating deals for the sale of lumber and timber and to stop poachers from illegally killing animals in the forest. Many times wanted criminals would flee their arrest warrants and seek the safety of hiding in a forest. When this would occur it was the duty of the Forester to organize roving gangs of armed men to flush out the criminal and capture him. Often Foresters held titles of prominence in their local communities and also acted as barristers and arbitrators. Their pay was usually above average and they could stand to make a decent and profitable living.
Many people confuse the role of the forester with that of the logger or the lumberjack, but most foresters are concerned not only with the harvest of timber, but also with the wise management of forests to (in the words of Gifford Pinchot) "provide the greatest good for the greatest number in the long term". Another notable forester, Jack Westoby, remarked that "forestry is concerned not with trees, but with how trees can serve people".
Usually a bachelor's degree is considered the minimum education required, but some individuals are able to secure a job without a college education based on their years of experience. Some states have a licensing requirement for foresters and most of those require at least a 4 year degree from a college.