Flakscheinwerfer-Abteilung 409 (o)

Formed 26 Aug 1939 in Dortmund from parts of III./Flak-Regiment 4, with 3 Batterien (known as Res.Flakscheinwerfer-Abt. 409 until Jul 1942).

4./Sw.409 was formed in 1942.

Disbanded Feb 1944:

2./Sw.409 became 5./518
3./Sw.409 became 4./518

Service:

• Jul 1941 in Duisburg(?)
• Jun 1942/May 1943 in Duisburg
• 1 Nov 1943 in Duisburg under 4. Flak-Division (Stab/Flakscheinwerfer-Regiment 74)
• 1 Jan 1944 in Duisburg under 4. Flak-Division (Stab/Flakscheinwerfer-Regiment 74)
• 1 Feb 1944 in Duisburg under 4. Flak-Division (Stab/Flakscheinwerfer-Regiment 74)