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A UK defense intelligence report concluded that “Russia has constructed some of the most extensive systems of military defensive works seen anywhere in the world for many decades". The complex, multi-layered system of defensive lines hinged on the village of Robotyne and was breached after months of heavy fighting by Ukrainian forces.
However, "flexible" defense lines (Mannerheim Line, Árpád Line, Bar Lev Line) were not based on dense lines of concrete bunkers and pillboxes (as the Maginot system was). The main intention of flexible type field fortification was to close potential traffic and attack barriers with multiplied anti-tank ditches , hedgehogs , and dragon's teeth .
In the first line of defense, inhaled bacteria are trapped by mucus and are swept toward the pharynx and are swallowed. [1] Bacteria which penetrate the mucous layer are dealt with a second line of defense which includes antimicrobial peptides that are secreted by the surface epithelium of the respiratory tract which kill many strains of ...
Underwater mine fields were a critical component of the defence, and smaller guns were also employed to protect the mine fields from minesweeping vessels. Defences of a given harbor were initially designated artillery districts, redesignated as coast defense commands in 1913 and as harbor defense commands
The first basic military map symbols began to be used by western armies in the decades following the end of the Napoleonic Wars.During World War I, there was a degree of harmonisation between the British and French systems, including the adoption of the colour red for enemy forces and blue for allies; the British had previously used red for friendly troops because of the traditional red coats ...
KYIV (Reuters) -President Volodymyr Zelenskiy said on Friday he wanted to double Ukraine's air defence capacity over the summer after receiving the country's third German-supplied Patriot system ...
A defense line or fortification line is a geographically recognizable line of troops and armament, fortified and set up to protect a high-value location or defend territory. A defense line may be based on natural difficult terrain features, such as rivers or marshes, mountain ranges, or coastlines; temporary field fortification works such as ...
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