Wire Flashcards
What are barbed wire obstacles
reinforcing obstacles designed to impede, slow, or stop the movement of foot troops, and in some cases, tracked and wheeled vehicles
What are barbed wire entanglements
artificial obstacles designed to impede the movement of foot troops and, in some cases, tracked and wheeled vehicles.
The materials used in constructing barbed wire entanglements are relatively lightweight and inexpensive, considering the protection they afford. Barbed wire entanglements can be breached by fire but are built rapidly, repaired, and reinforced.
What are the main requirements when setting up and employing wire obstacles
• Must be under friendly observation, covered by fire, and where practical protected by anti-personnel mines, trip flares, and warning devices
• Concealed from enemy observation as far as practical by incorporating terrain features, ie reverse slopes, hedges, woods, and fence lines
• Should always be erected in irregular and non-geometrical traces
• Must be coordinated with other elements of the defense
• Should always be deployed in depth
– Belts
– Bands
– Zones
What is a belt
an entanglement one fence in depth.
What is a band
A band consists of two or more belts in depth, with no interval between them. The belts may be fences of the same type, or the band may be composed of two or more fences of different types.
What is a zone
A zone consists of two or more bands or belts in depth, with intervals between them.
What is the difference between fixed and portable entanglements
One is built in place and the other can be moved without complete disassembly
In zones, how are lanes and gaps arranged
Staggered in a zig zag pattern
How are entanglements classified
By use, depth, and whether they are fixed or portable
What are the three classifications of the use of entanglements
– Tactical
– Protective
– Supplementary
How are tactical entanglements placed
sited parallel to and along the friendly side of the final protective line
How are protective entanglements placed
located in places to prevent surprise assaults from points close to the defense area
How much buffer should there be from a protective entanglement and why
40-100 meters; In order to stay out of hand grenade distance
Where is supplementary wire placed
In front of the FEBA to break up the exact pattern of tactical wire
AND
To the rear of the FEBA it is used to connect and reinforce all the protective wire entanglements
Supplementary Wire = ?
(mean Perimeter) x (1.25) x (number of belts)
Protective Wire = ?
(perimeter) x 1.10) x (number of belts)
Tactical Wire = ?
(mean perimeter x (1.25) x (number of belts)
What are some advantages of Barbed Steel Tape
– Size and weight – Less time consuming – Harder to breach – Can not be cut easily with wire cutters 
What are some disadvantaged of Barbed Steel Tape
– Breaking strength
– Dispenser
– Not recoverable to its original form – More easily cut by shell fragments
– Can be cut with a bayonet
What are the two types of double apron fence
– 4- and 2- Pace Double Apron
– 6- and 3- Pace Double Apron
Which is better, double apron fence or triple strand concertina wire?
Triple strand concertina wire
What are the two categories of obstacles
Existing and Reinforcing (placed through military effort)
What are the two subsets of the “Existing” obstacle
Natural and Cultural
5 types of reinforcing obstacles
- Demolition
- Constructed
- Contamination - Expedient
- Landmines
How far away should constructed obstacles be emplaced
a terrain feature away from direct engagement areas.
3 types of ditches
- Triangular
- Sidehill Cut
- Trapizoidal
SWEATMSS
Security Water Electricity Admin and HN Training Trash Medical Sewage Shelter
Where is the aid station located
centrally
3 types of TACFAC
initial
temp
permanent
3 Types of pickets
U-shaped (steel)
Screw (wood)
Wood
Types of shelters
hasty
deliberate
3 categories of shelters
surface
underground
cut and cover
3 types of ditches
triangular
side hill cut
trapezoidal
Wire Ties
Top eye
intermediate eye
apron
post tie (most common)
