Poland Dept of Defense announced there will be large movements of troops and equipment in connection with an excercise.

The department asked citizens not to publish information about the movement of troops and photographs of military equipment.

I dont think Poland would be concerned about photographs if this was really just an exercise.

https://www.tellerreport.com/news/2022-04-28-the-ministry-of-defense-of-poland-announced-the-movement-of-columns-of-military-equipment-in-connection-with-the-exercises.B1LUbzG_H9.html