Final answer:
The Navy Good Conduct Medal was established in 1869 to honor sailors for their good behavior and faithful service over a typical period of three years.
Step-by-step explanation:
The Navy Good Conduct Medal (NGCM) was established in 1869.The medal is awarded to enlisted members of the U.S. Navy and Naval Reserve who demonstrate good conduct and obedience to regulations. It is a decoration presented by the United States Navy to recognize sailors who have demonstrated sustained good behavior, fidelity, and faithfulness in their service. The NGCM is awarded to active-duty personnel and the Reserve on active duty or drilling status. It reflects the individual's character and dedication to the principles of naval service over a set period, typically three years.