I am trying to document my grandfather's participation in World War II, and have come across a letter written by a German military official informing my grandfather's parents that their son is missing in action.

The letter refers to the location of his last known whereabouts as "*Kessel von Trun und Chambios*" on the 18th of August, 1944. I can only assume that this was in the vicinity of the western front at the time. My grandfather's next correspondence was from a POW camp in the UK, but I don't know whether he encountered US or British forces (or other, for that matter).

*Kessel von Trun und Chambios* translates to the *Cauldron of Trun and Chambios*, presumably in reference to an encirclement by allied forces at the time (although I don't know this for sure).

I can find a city by the name of *Trun* in France, but I can't find *Chambios*, let alone where this "Cauldron" took place.

Any ideas?