Definition of defense in depth in English:

defense in depth

The practice of arranging defensive lines or fortifications so that they can defend each other, especially in case of an enemy incursion.
More example sentences
  • It has been claimed that fortified defence lines, supported by defence in depth, were an outmoded concept in the face of a warfare of movement.
  • In the 1720s, the strategic military forces were concentrated around Moscow, able to deploy to any theater, while a series of fortified lines were constructed along the outer perimeters to provide a defense in depth.
  • As the Stalin Line had been largely dismantled, there was no defence in depth.
See parent entry: defense

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Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…