Complex sentence: He had aspirations of attending the Naval Academy but was denied due to active duty injuries, after four years of service he was medically processed out of the military with an honorable discharge and recognized as a war time veteran.
Split into simpler sentences: He had aspirations of attending the Naval Academy but was denied due to active duty injuries. After four years of service he was medically processed out of the military with an honorable discharge and recognized as a war time veteran.