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ROYAL AIR FORCE. COMMON CORE AND DEPLOYMENT SKILLS AIDE-MEMOIRE

TRIPLE CONCERTINA

PROS: Can be developed from a single concertina.

CONS: Difficult to conceal. Fairly easily breached.

TYPE 4

PROS: Can be developed from a single concertina. More difficult to breach. Simple to construct. Relatively easy to conceal.

DOUBLE APRON

PROS: Ordinary barbed wire from fences, etc, can be used.

CONS: Slow to construct. Easily breached.

REMARKS: In general only used where concertina wire is not available.

CATWIRE TYPES 1, 2 and 3

PROS: Difficult to breach. Can be improved in stages. Looks a formidable obstacle.

CONS: Difficult to conceal. Types 2 and 3 expensive in stores. Not suited to protect a defensive position.

REMARKS: Used mostly for protection of static positions, ie, key points.

HIGH WIRE

PROS: Difficult to breach. Looks a formidable obstacle.

CONS: Difficult to conceal. Expensive in stores. Not suited to protect a defensive position.

REMARKS: Used mostly for protection of static positions, ie, key points.

STORES NEEDED FOR 100m OF OBSTACLE

DANNERT CONCERTINASBARBED WIRE REELS1.8m PICKET0.6m PICKET
LOW WIRE-16-220
SINGLE CONCERTINA7128-
TRIPLE CONCERTINA21456-
TYPE 428280-

SANDBAG EMPLACEMENTS

◉ A sangar 2m × 2m × 0.7m high will need 200 sandbags.

◉ 3 people can fill approximately 60 sandbags in 1 hour.

◉ Sandbags are 3/4 filled and their necks (chokes) tied.

◉ Sandbags are laid so that neither their chokes nor side seams are in the outer face of the wall.

◉ The corners of each bag are tucked in as they are laid.

◉ The chokes are tucked under to prevent bursting.

◉ Each sandbag when laid must be beaten with a pick helve or shovel.

◉ Joints in adjacent courses are staggered.

◉ The sangar should be approximately shoulder height with fire ports.

◉ Camouflage once completed.

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