Final answer:
The Combat Distinguished Device is an insignia added to military awards, indicating that the award was earned through direct combat participation, as authorized in the award citation.
Step-by-step explanation:
The Combat Distinguished Device is an insignia that may be attached to certain military awards to denote that the award was earned through direct participation in combat operations. The device is authorized in the award citation and is an indication of exceptional performance or valor during combat. It is a specific honor that adds a distinction to already existing military decorations. For example, a member of the armed forces might be issued a campaign medal for service during a time of war, but if they engaged directly with the enemy, they might receive the same medal with the Combat Distinguished Device attached.