Picked this one up at the Waver fair a while ago. They're Belgian, but I liked the view of their bayonets so that justifies it for me personally.
They seem to be armed with Gew89s and most have either M16 or M24 bayonet fixed to their rifles. One bayonet is particularly interesting, namely the second one starting from the left. It is a M1889 "Hopkins & Allen" bayonet. These are identical to the short Génie et Infanterie example and the long Garde Civique model, but with an even longer blade.
What makes this bayonet interesting, is that these were made in the USA during WWI, to supply the Belgian forces who were cut off from their arms manufacturers, mainly located in the Liege region.
It is hard to comment on the date, as these were used as of 1916, but also after the war and during the start of WWII. What is evident is that they are posing in a Belgian camp somewhere.
I'm going to need some help on the identification of their other gear though, I'm far from educated when it comes to Belgian forces.