Assertion: bridgehead's line | /r/HasProperty | fortified
Facets:
Source sentences:
text: Falkenhayn issued memoranda on 7 and 25 January 1915, to govern defensive battle on the Western Front, in which the existing front line was to be fortified and to be held indefinitely with small numbers of troops, to enable more divisions to be sent to the Eastern Front.
text: The front line was to be fortified to enable its defence with small numbers of troops indefinitely and captured ground was to be recovered by counter-attacks.