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This article is accurate for the latest versions of EU3, Napoleon’s Ambition and In Nomine v3.2.
Please help update this page to include information on the HTTT and DW expansions.

Defensiveness affects fort sieges and assaults, and is used in In Nomine.

  • Defensiveness affects how often siege checks are made. At 100% defensiveness (default), checks are made once per month. Higher defensiveness percentages lengthen the time between siege checks, thus, a 25% bonus to defensiveness means that siege checks are taken every 37.5 days (or so) instead of 30.
  • Defensiveness affects the success of siege checks as a multiplier to the Fort Level. Thus, not only does each individual check take longer, it's less likely to succeed. A level 4 fort in a nation with +25% defensiveness acts as a level 5 fort when under siege (4 * 125% = 5).
  • Defensiveness strengthens the garrison against assaults.

Defensiveness of a garrison may be offset by using enough Artillery for a Siege bonus and generals with siege modifiers.

Defensiveness may be modified by: