Taking Pictures

This morning my grandfather brought over a photgraph of my grandmother's father, which would make him my great-grandfather. *duh*
I've never seen this before. He was in the army in WWII.
I also found out that he was born in Montana on February 17, 1896.

I've been thinking about doing some kind of family history search.
I want to know from whence I came.
*grins*