Looks like a civilian case with the ruptured duck insignia on the side. The badge was for US servicemen returning from active duty at the end of the war.
The case is not military and it seems the binocs themselves fit a smaller case. So they dont belong together. Pics of the markings on the binoculars could tell us were they are from and if they are civil or military.
The ruptured duck on the case is also added at one point. Best shot is the owner was a ww2 veteran.