# Kammhuber Line
**Entity class:** System
**Research spine:** [[research/Chronology of Signals, Silos, and Sovereign Software - Research|Chronology of Signals, Silos, and Sovereign Software]]
## Definition
The Kammhuber Line was Germany's layered 1941 air-defense network of radar, searchlights, controllers, and night fighters.
## Chronological Proximity
It came online as the [[wiki/Office of Scientific Research and Development|OSRD]] formed and was challenged by the 1942 [[wiki/Bomber Stream|bomber stream]] and [[wiki/Operation Millennium|Operation Millennium]].
## Relational Proximity
Its [[wiki/Himmelbett|Himmelbett]] cells joined [[wiki/Freya Radar|Freya]] search radar, [[wiki/Würzburg Radar|Würzburg]] tracking radar, and interceptors in an early sensor-to-shooter chain.
## Collection Routes
[[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]] · [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]] · [[wiki/Signals, Silos, and Sovereign Software|Signals, Silos, and Sovereign Software]]
## Sources / Provenance
- [[research/Chronology of Signals, Silos, and Sovereign Software - Research|Chronology of Signals, Silos, and Sovereign Software - Research]].