Soldiers from the county are carrying out training operations in Poland.
2nd Battalion The Mercian Regiment is conducting operations in built up areas on ex Anakonda in Poland.
The Regiment is training as part of a multinational force, including Polish, American, Canadian and Turkish troops.
The Mercian Regiment are currently in Wedrzyn, North west Poland and have been training hard with their NATO allies in the urban environment as they prepare for a Brigade attack this month.
The Regiment recruits from five counties including Nottinghamshire and Derbyshire.
Ex Anakonda is being used to train multiple nations together to ensure they are able to travel anywhere in the world and work with each other to fulfil common security interests.