How can I ascertain from a photo, the Regiment in which my grandfather served in WW1. It was taken in 1915 in Ongar (Essex) and says Regt Police.There are 8 soldiers in this posed photo with 3 or 4 different cap badges. I can email the photo if there is anyone who feels they have any suggestions. Unfortunately although his name is now published on the medals web site, his name "William Berry" is one of 267, but which one!!
Thanks
Geoff Berry