Army - Good Conduct w Medal w Ribbon - 21 Years - MugArmy Good Conduct Medal is awarded on a selective basis to enlisted Servicemembers of the Regular U. S. Army who distinguished themselves by exemplary behavior, efficiency, and fidelity throughout a specified period of continuousenlisted service. Good Conduct Medal Clasps are awarded and worn on the suspension and service ribbon of the Army Good Conduct Medal for second or subsequent awards of the medal.