I live in a very small village in Bavaria. Every one of the surrounding villages has a church and near the church there is a "Denkmal", a monument, with a list of names on it attributed to the years from 1914 to 1918 and some to the years 1939 to 1945. The lists in both time periods are shockingly long when one compares their length to the diminutive size of the village.
Let me assure you that there is no celebration of either war. But it would be very small minded and quite ignorant to celebrate the victories over Germany as anything other than a great tragedy of history which could have and should have been avoided.
Why the sensitivity on the German side then?
I live in a small village in Israel, every single village and town has a reminder of those killed in all of Israel's wars, WWII and WWI. Some have tributes to Germans (from WWI), Turks, British, French, Australians, New Zealanders and others.
Germany (and the allies) lost generations of young men in both wars but we must leave behind, the modern concept of parity where everything is relative and equal such as the suffering was equal on all sides or Germany (or Imperial Japan) as they were “victims” too.
True, these were massive tragedies BUT...
There were aggressors and defenders. Who initiated the onslaught and who paid the price. Those that brought these horrible events to the rest of us should not celebrate anything but quietly remember the dead but not forget the why and how.
Those that “won” the hard fought battles can indeed celebrate though modestly that they saved the world from Austro-Hungarian Imperialism and then Nazi Fascist world slavery.
There were clear winners and losers. We do not celebrate killing others, we do however, celebrate halting them.