Zadvajčen was formerly part of the German Empire. In the German Empire, the place was called Altkrug.
The place is now called Pervomajskoe and belongs to Russian Federation.
Historical place name | Country | Administration | Time |
---|---|---|---|
Sadweitschen | German Empire | Gumbinnen | 1938 |
Altkrug | German Empire | Gumbinnen | 1939 |
Zadvajčen | Under Soviet administration | Kaliningrad | 1945 |
Pervomajskoe | Russian Federation | Gusev | 1992 |