Antitank units defence bonus in rough terrain ?

[Rizzospeed]

Does an anti tank unit receive an bonus if it is defending (!) in rough terrain like woods, hills or maybe even cities.

I think this would make sense, iamgine a well camouflaged and entrenched 88 (for example) awaiting a tank attack in rough terrain.

[turn4441]

An anti-tank unit always gets a +3 modifier when defending, regardless of terrain. See the topic below.

http://slitherine.com/forum/viewtopic.php?f=121&t=78410

[goose_2]

do not put them in rough terrain extremely vulnerable

[huckc]

Right, their poor close defense rating generally outweighs their defense bonus.

Best put in fortification hexes.

[turn4441]

Yeah, I'm still learning. Listen to the Ph. D's.

[TSPC37730]

Back them up with artillery if possible. This will help with attacks by infantry.

[PoorOldSpike]

Does an anti tank unit receive an bonus if it is defending (!) in rough terrain like woods, hills or maybe even cities.
I think this would make sense, iamgine a well camouflaged and entrenched 88 (for example) awaiting a tank attack in rough terrain.

Sorry to come in late on this thread, the guys have covered your question but remember you can set up little tests in the editor like I do, and hit key 'L' when the shooting stops to get combat readouts like the ones I've done below, to help us try to understand what goes on in various combat situations. I say "try" to understand because I'm a maths dummy and need all the help I can get, I've added my comments in yellow text and hope I've got it right ..
It all boils down to the fact that when a tank attacks an AT gun, the gun always gets something called an 'AT vs tank/recon +3' initiative bonus which means it has a better chance of seeing the tank before the tank sees it, and will usually fire first.
But note that if the ATG attacks the tank, the ATG loses the bonus, so it's often best for the gun to lie low and let the customer come to the shop.
REMEMBER too that when we select a unit in the game we get a simple little "predicted combat losses" panel which is a godsend because it gives us a good basic idea of what's likely to happen when the sh*t starts flying..



But in the combat below, the ATG is in a city and both it and the tanks initiative is therefore reduced to '1' (presumably because the buildings make spotting difficult for both), BUT the ATG gets an 'Entrenchment +3' defence bonus for lurking in good cover among the buildings-

[Yrfin]

Plz read http://www.slitherine.com/forum/viewtopic.php?t=62845

[dragos]

You should not bother to learn all the modifiers, in time you will have enough experience to know when to make an attack or not. The predicted losses is a good indicator, but the most important thing to know is: when the defending unit can fire back (it is not fully suppressed, cannot attack air, etc) you should always expect to suffer some losses, even if the predicted losses shows something to 0 in your favor. Therefor you should make that attack only if it means to bring you one more step towards the goal, like you have enough supporting units and you can take a city that blocks your path in that very turn. In this case you can even attack an entrenched infantry with an anti-tank unit if the strategic benefit outweighs the losses. Each individual combat and how it is calculated is less important that having a sound strategic plan and sticking with it. Do not get yourself diverted by what seem to be easy one on one fights, because this is one of the most common mistakes.

[PoorOldSpike]

Does an anti tank unit receive an bonus if it is defending (!) in rough terrain like woods, hills or maybe even cities..

Absolutely..
As a test nut I've been running more tests by having PzIVH's attack 6-pdr ATG's in every type of terrain.
Firstly, the ATG always gets a +3 Initiative bonus (which increases its chances of firing first) even if its in clear terrain.
Secondly, if the ATG is in non-clear terrain it gets an automatic 'entrenched' defence bonus, for example being in a Fortification (the squiggly trenches graphic) is excellent because it gets +4.
If the ATG is on a river bank that's also excellent if it's attacked by a PzIVH in a river because the gun gets a +4 bonus to it's defence strength AND +4 to its attack strength..
City, Thick forest and Jungle are the next best because they give the ATG a +3 def bonus, and other terrains give a +1 or +2 def bonus.
HOWEVER like Dragos said, don't bother to learn all the modifiers, I tried myself but it's impossible because there are so many other variables that affect the maths, like the suppression level of attacker and defender, a possible terrain Initiative cap, extra dug-in trench levels, rugged defence chance, close defence possibility, ambush chance, mass attack bonuses, relative unit strengths and so on.
So a good rule of thumb is therefore (like other guys have said) to simply play it by ear and gut instinct and plonk our ATG's in terrain whenever we can to let our boys know we've got their backs, we can't guarantee they'll survive, but any cover (even a few shrubs and bushes) is a lot better than no cover..
"Regard your soldiers as your children, and they will follow you into the deepest valleys.
Look on them as your own beloved sons, and they will stand by you even unto death!"- Gen. Sun Tzu 600 BC