Greece 1920 - Greek Soldiers Photo Card

I saw this photograph card available on Ebay, labelled "Greece 1920.  Greek Soldiers Photo"

Interesting military caps - can anyone identify what branch of service they are in?  You can follow the link above and move your mouse over the photo to enlarge for a close up viewing.  

Can someone read the inscription and address - maybe we can forward this photo to someone in the family.