Disuse
After the Revolutionary War, the Badge of Military Merit fell into disuse although it was never officially abolished. In 1932, the United States War Department authorized the new Purple Heart Medal for soldiers who had previously received either a Wound Chevron or the Army Wound Ribbon. At that time, it was also determined that the Purple Heart Medal would be considered the official "successor decoration" to the Badge of Military Merit.
Read more about this topic: Badge Of Military Merit