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Units get a defensive bonus when you put them in "Fortify" or "Alert". But sometimes I just want to pass them over for a single turn. If I select "Do nothing" (or hit space, which is the same thing) do they still receive the defensive bonus?

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up vote 8 down vote accepted

No they don't, this unit simply didn't take a turn - with the exception that the unit is stationed on a tile that provides a defensive bonus (for example a fortress) or they're on rough terrain.

A full list of conditions and bonuses as well as base statistics for each unit type is detailed in this article. Of particular note is the following;

  • +25% defensive bonus for rough terrain (hills, forest or jungle)
  • -10% defensive penalty for open terrain (not hill, forest or jungle)
  • +20-40% defensive bonus for unit Fortification. The fortifying unit gains +20% on the first turn, and +40% thereafter
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Considering that fortification is a stacking bonus which increases over times (ie: 20% the unit you fortify and 40% thereafter) I very much doubt that this bonus is applied automatically for skipping turns. The only bonus I can think you'd get for skipping turns is if you're in a fortress or on a hill. – kalina Jan 25 '13 at 15:54
I'm pretty sure they don't auto-fortify if you skip turns in Civ5. – agent86 Jan 25 '13 at 19:20
This turned out to be harder to test than I thought, since Civ 5 doesn't make it obvious what your fortify bonus is. But using Firetuner, it appears that you are right. A unit that selected Do Nothing the previous turn still returns 0 for GetFortifyTurns. – bwarner Jan 26 '13 at 4:21
Is this still the case for BNW? The fortification system works differently that civ 5 vanilla with regards to cities at least, so I am curious if this changed as well – Lawton Jul 22 '13 at 17:23

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