Beautiful picture. My Dad was killed in WWII in Okinowa Japan. Very young American Soldier leaving an infant (me), 3 year old and 5 year old daughters.
So sorry about your dad. My dad was in Japan and married Miss Japan. Her name was Barbara. He had her name tatooed on his arm. He never talked much about Japan though.
I believe the dead can look down and visit the loved ones so just pray and ask God to see your Dad.