Jersey War Tours





Batterie Roon
6/HKAR 1265

This batterie had four French 22cm K 532(f) guns and there were 144 men assigned to Roon. (The 4 gun positions are highlighted on the map with red circles). Roon also had one MG311(f) in a Renault FT17 tank turret, multiple machine gun positions, a 5cm (Gr.W.36) mortar, 14 abwehrflammenwerfer 42 and two 150cm searchlights codenamed Attila and Armin

Of the four positions only two can be found, one is buried under Le Mont es Croix estate, the second is buried but you can make out where it was, the third is on the grounds of the prison (possibly lost) and the last is now a public area next to a small estate not of the prison.




Two Anti Aircraft Batterie protected Batterie Roon


1./GemFlakAbt 364 (Air Force)
six 8.8cm Flak 37 and two 2cm Flak 38 guns and one Radar (Wurzburg Reise )

Heeresflakzug 503 (Army)
Two 2cm four barrelled Flakvierling 38 on concrete gun emplacements


The Guns

Details of the K532(f) Gun (f) meaning French made (captured by the Germans)

Canon de 220 L Mle 1917 Schneider

Manufacturer: Schneider et Cie., Le Creusot, France
Calibre 220mm
Length of barrel L/35 (L34.87): 7,672.5mm
Length of rifling (L/26.80): 6,113.5mm
Twist of rifling 92 grooves, 7 degrees (to right)
Barrel construction Jacketed
Weights Barrel – 9,280kg (with breech block)
Traverse 360 degrees
Elevation 0 to +37 degrees
Ammunition 22cm Gr. 534 (f) weight: 104.05kg
M/velocity 754m/sec
Range : 21,600m
22cm Gr. 535 (f) weight: 104.75kg
M/velocity 766m/sec
Range: 22,800m
Charge weight 20kg
Rate of fire 1 round/minute



In August 1944 British destroyer HMS Onslaught (one of the last photos in the album below) was attacking a German convoy. The convoy came within range room and a few other batteries, the Germans opened fire and HMS Onslaught withdrew. During this exchange one of the 4 K532’s shells exploded in the breach killing a member of the gun crew and injuring many others. This K532 barrel can be seen in two pieces at Batterie Moltke (Gun number 3), as well as a recovered K532 barrel (from the gun graveyard). The last few pictures of the album show them.









Exploring bunkers:

  • Always get permission from the owner
  • Take a torch, a spare and one more for luck
  • Don't go alone & tell someone where you will be and for how long
  • You will get dirty as most are often full of rubbish and may have been used as a public toilet
  • Anything you find still belongs to the person that owns the property
  • Unexploded ordnance is still found in Jersey if you see or find anything that looks like ordnance please call the bomb disposal officer on 01534 612 612.

Jargon Help

Resistance Nest (RN) = Widerstandsnest (WN)
Small pocket of resistance, these would be made up of small groups of up to 10 men with light weapons. They would man Anti-tank weapons, an observation post or a field gun.

Strongpoint (STP) = Stützpunkt St.P
Next level up from an RN and consisted of several RN's. STP areas would have a combination of weapons and different branches of the military used. Examples of this can be found with Strongpoint Greve de Lecq and Strongpoint Corbiere

Jäger Casemate was a special design and name for bunkers designed to hold a 10.5cm field gun

Sources of Information
German Documents are housed at The National Archived in Washington
T-78 Roll 318
T-78 Roll 317
B-833, 319th Infantry Division (1941-45)


Jersey Occupied by Michael Ginns
ISBN 978-1-905095-29-2

RAF Photos care of The National Collection of Aerial Photography

Bundesarchiv
Multiple Photos

Map of slave labour camps. Kindly Provided by Emilio Pérez who’s father Casimiro Pérez Gomez was in Camp UDET

JWT onsite visits & internet research









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