Connecting military units of opposing forces

As some of you may already have noticed I've converted some LGB rolling stock into a Heeresfeldbahn rake. All these LGB-wagons are fitted with the original LGB couplings.

I'm also a proud owner of a British Roundhouse 16mm scale Livesteam locomotive in a military W^D livery (a 50 year gift from my beloved wife and kids),  which also runs on 45mm gauge track. It's fitted with it's original chain-link-couplings, and I want to keep it that way. I plan to build own rollingstock to this from kits, but at the same time I want to be able to connect it to my military LGB wagons (with the LGB couplings), so some modification was needed. 

I had a very plastic, brownish and toy-looking LGB wagon which I converted with different couplings in each ends; LGB coupling in one end, and a chain-link-coupling in the other. With this I would be able to connect the 'LGB rake' to my Livesteam locomotive if I wanted to.

The LGB-loop to the right work as a buffer to the lower buffer on the 16mm locomotive. It means it will be able to couple it to other LGB-stuff in both ends as well if desired.

The wagon it self had large DR (Deutsche Reichbahn) markings and looked very plastic and bright as well. To run behind both British and German locomotives I think it needed a more general look to it, so I simply sprayed it with grey car primer, picked out some few boards in another color and gave it a heavy black-wash.

Since it's open it would be nice to load it with some cargo. I had some very bright colored toylike LGB oil barrels (don't trow anything away) I simply repainted and removed the stickers. I also put in a couple of 3D-printed crates I've used for painting samples.