Since the introduction of post Franco camo uniforms to Spain the Navy and Marines wore the same uniform. Similar to USMC for a long time, the only difference was the IM logo printed over the left breast pocket. The Navy wears their rank in the same spot, Marines on the collar. This was true for the old Woodland, the ripstop Woodland, and the 4 color Desert. Not sure if this carried over to the digital as I'm a little out of touch with that particular uniform.
Shame the labels are worn out! Spanish labels contain good info.
Yup, the Marines have a permanent base in Spain for... 6? or so years now. It's a rapid reaction force designed to cover the Med and Africa. Very close working relationship with the Spanish.
The previous Spanish Army camo uniforms, going back into the 1990s, have had the short sleeve two pocket shirt as standard issue. Both temperate and desert. Same goes for the current digital type. I've always assumed its primary function was for garrison use.
Yup, no sense pumping money into ruggedizing kit that is explicitly designed for parade use only. I've got the older Woodland and 6 Color Desert versions. Er, and maybe the Digital Desert one too. I forget
There's a limited number of things that were made to be worn with it. Off the top of my head, CETME/HK dual mag pouch, pistol holster, pistol clip pouch, and shovel cover. Like the belt and suspenders, they are explicitly designed for parade use. Look great, but would not last a week in the field!