Final answer:
There is no statutory time limit for submitting awards for the Purple Heart Medal; recommendations can be made any time after the qualifying event occurred.
Step-by-step explanation:
The time limit for submitting awards for the Purple Heart Medal is not bound by a fixed period such as 3, 5, 7, or 10 years. The Purple Heart is awarded to members of the armed forces of the U.S. who are wounded by an instrument of war in the hands of the enemy and posthumously to the next of kin in the name of those who are killed in action or die of wounds received in action. Because it is an entitlement due to the circumstances of service, there is no statutory time limit for the submission of a recommendation for a Purple Heart. However, it's often recommended to submit for the award as soon as practicable.