| Modern Day Location | Belligerent |
| North European Plain | |
| Scandinavia | |
| Czech Republic | |
| Scandinavia | |
| Western Europe | |
| Germany | |
| Germany | |
| Germany | |
| Northwestern Europe | |
| Lithuania, Russia, Poland | |
| | Modern Day Location | Belligerent |
| Romania | |
| Turkey | |
| Pannonian/Carpathian Basin | |
| Southwestern Europe | |
| Scandinavia | |
| Italy, Germany | |
| Germany | |
| Central Europe | |
| Germany | |
| Balkan Peninsula | |
|