. . . and the Allies did it again in WWII. General Patton commanded a fake army designed to fool the Germans into believing the invasion of France would take place at Pa de Calais instead of at Nomandy. The fake army included inflatable tanks, trucks, etc.
The only thing that is newsworthy about this latest Russian incarnation is that it also includes fake thermal and radar signatures. Allowing a very old trick to be used again.