Strange Encounters

My maternal grandfather and my paternal grandmother’s brother (my dad’s uncle) were in the same platoon at Great Lakes Naval Training Center in WWII. 

Did they know each other before? They were from the same town. Who knows?

In any case one generation later the two families came together when dad married mom.  Of course my grandmother and her entire large family hated my mother, so maybe the enmity came from those days at Great Lakes?