# Hans-Hartwig Trojer

> German World War II U-boat commander

**Wikidata**: [Q2455029](https://www.wikidata.org/wiki/Q2455029)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hans-Hartwig_Trojer)  
**Source**: https://4ort.xyz/entity/hans-hartwig-trojer


## References

1. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/U_221)
2. [Source](http://www.ubootarchiv.de/ubootwiki/index.php/Hans-Hartwig_Trojer)
3. Der U-Boot-Krieg, 1939-1945
4. Die deutschen U-Boot-Kommandanten (1 ed.)
5. [Source](https://uboat.net/men/decorations/ritter_winners.htm)
6. Virtual International Authority File
7. Integrated Authority File
8. [Source](https://uboat.net/men/trojer.htm)