Old joke. Don’t know if it really happened or not.
1940: A group of recruits is lined up before a sergeant.
Sergeant: Who here has a college degree?
One recruit raises his hand.
Sergeant: Fall out for officer candidate school.
2010: A group of recruits is lined up before a sergeant.
Sergeant: Who here has a college degree?
Three recruits raise their hands.
Sergeant: Grab those shovels. You men dig the first ditch.
Yes; that did happen.