One weekend a month, two weeks a year
"One weekend a month, two weeks a year" is a former recruiting slogan used by the U.S. Army National Guard. It indicated the amount of time an individual would need to spend actively in the Guard to be a Guardsman with benefits. Though never officially, it was also informally used by Air National Guard, U.S. Army Reserve, U.S. Naval Reserve, U.S. Marine Corps Reserve, U.S. Air Force Reserve and U.S. Coast Guard Reserve personnel in describing their similar military time commitment.
It was dropped during the Iraq War after it became clear that National Guardsmen and Reservists were now serving considerably more time in service, especially on active military duty on extended overseas deployments in the Southwest Asia combat zone.