Of course it would never be confirmed by Russia. The known pieces correlate well though and consistent - the trenches digging and prolonged presence in the Red Forrest by the soldiers is confirmed, and the background radiation there even without disturbing the ground by digging and driving (such disturbance raises level several folds) is 0.1-10mSv/hour, so 30 days continuous presence would result in 0.07-7 Sv. The radiation sickness would start to show at something 0.5 Sv. The reports of Russian soldiers brought into Homel specialized radiation hospital pretty much dove tails it. Personally to me the most important confirmation is that such event is exactly how things happen in Russian army :)
And just for desert - the commander of the Russian forces which invaded and were stationed in Chernobyl has as a result of that operation recently received a high military award for "preventing nuclear terrorism". Looks more than ironic given that it is his soldiers who got ill and poisoned and who retreating stole and took with them a lot of various contaminated/activated hardware which were stored in Chernobyl zone for years.
And just for desert - the commander of the Russian forces which invaded and were stationed in Chernobyl has as a result of that operation recently received a high military award for "preventing nuclear terrorism". Looks more than ironic given that it is his soldiers who got ill and poisoned and who retreating stole and took with them a lot of various contaminated/activated hardware which were stored in Chernobyl zone for years.