The signs appeared around the town of Ivanteyevka, just outside Moscow, ahead of Russia's Victory Day anniversary on 9 May. But it didn't take long for someone to notice that the troops featured weren't Soviet airmen, but a Luftwaffe bomber crew. The town's mayor, Sergei Gridnev says local people, war veterans and the whole of Russia can rest assured that he'll punish those responsible for the "appalling incident", the state news agency Tass reports . The local branch of the pro-Putin All-Russia People's Front says it spotted the billboard and demanded its removal, and 12 hours after it went up the offending image came right back down again.