Interesting medal or penning identification pls

I got this interesting medal/penning from a friend but i can’t find it anywhere on Numista

1 Ge Nl Corps → www.1gnc.org

Bergen Hohne is a large Training range in Germany, the British controlled it as the 7th Armoured Brigade was stationed there (the desert rats) until they left in about 2015. It is now controlled by a German brigade or division and still used by NATO, it was a large German training range between the 1st and 2nd world wars, and was the site of the Bergen Belson concentration camp liberated by the British in 1945.  

Your medalion is from a 2011 exercise „odyssey sword“ in November 2011. Its a trinket given to members of the military who took part in the exercise.