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Double and triple thickness wire was used and laid 3–5 ft (0.91–1.52 m) high. The front line had been increased from one trench line to a front position with three trenches 150–200 yd (140–180 m) apart, the first trench ( Kampfgraben ) occupied by sentry groups, the second ( Wohngraben ) for the bulk of the front-position garrison and ...
Depending on the requirements and available resources, wire obstacles may range from a simple barbed wire fence in front of a defensive position, to elaborate patterns of fences, concertinas, "dragon's teeth" (which serve a similar purpose as wire obstacles, but for combat vehicles instead) and minefields (both anti-personnel and anti-armor ...
The private was interrogated, while semi-conscious through loss of blood, giving details of the British attack. On the north side of the village, the barbed wire in front of RIR 91 had been badly cut and the trenches flattened but most of the dugouts remained intact, including one penetrated by a heavy shell which failed to detonate. [25]
The wire-cutting No. 106 fuze was developed, specifically designed to explode on contact with barbed wire, or the ground before the shell buried itself in mud, and equally effective as an anti-personnel weapon; The first anti-aircraft guns were devised out of necessity; Germany was far ahead of the Allies in using heavy indirect fire.
Fields of barbed wire up to 100 yd (91 m) deep, were fixed with screw pickets in three belts 10–15 yd (9.1–13.7 m) wide and 5 yd (4.6 m) apart, in a zig-zag so that machine-guns could sweep the sides, placed in front of the trench system. Artillery observation posts and machine-gun nests were built in front of and behind the trench lines.
Barbed wire, also known as barb wire or bob wire, is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the strands. Its primary use is the construction of inexpensive fences , and it is also used as a security measure atop walls surrounding property.
The Germans had built Riegel I Stellung (Reserve Position I), a double line of trenches and barbed-wire several miles further back from Essarts to Bucquoy, west of Achiet-le-Petit, Loupart Wood, south of Grévillers, west of Bapaume, Le Transloy to Sailly-Saillisel as a new second line of defence along the ridge north of the Ancre valley. [1]
On the night of June 4, General Alexei Kaledin opened an artillery barrage against Archduke Joseph Ferdinand's Austro-Hungarian defenses. Lasting through the night and into the morning, the Russian artillery broke gaps through the barbed wire trenches. This allowed the infantry to commence a surprise attack in the vicinity of Olyka. [4]