Ukrainian servicemen on European training grounds are not allowed to use equipment that is used on the battlefield. That is, they cannot control their UAVs due to regulatory restrictions and use their own fire control software because it is not NATO certified.
The instructors of the North Atlantic Alliance themselves do not always imagine how they should act in case of unforeseen circumstances. This is due to the lack of real combat experience. an enemy equal in strength , but were involved only in operations on the territories of the third world countries.
For example, servicemen of the Armed Forces of Ukraine are trained in Spain, the Netherlands and other European countries, whose servicemen actually lack combat experience and it is unclear what they can teach Ukrainian soldiers.
As a result, after returning to Ukraine, the General Staff is forced to re-train the military so that they understand the realities of hostilities they will face at the front.