What does "In Cover" mean - Do Shadow Warriors get +1 to hit/wound with their bows when behind a terrain feature, or only when on top of it?

[yukishiro1]

Quote

Strike Unseen: From deep cover, the Shadow
Warriors draw a bead upon their quarry,
bowstrings taut, arrows knocked and ready for
the killing shot.

Add 1 to hit and wound rolls for attacks made
with missile weapons by this unit if this unit is
in cover.

Being in cover is defined in the core rules (17.1.1) as: 

Quote

A target unit is in cover if all of the models in the unit are wholly on a
terrain feature or behind a terrain feature.

Being behind terrain - 17.0.2 - says this:

Quote

A target unit is considered to be behind a terrain feature if all of the
following criteria are met:
• The target unit is more than 3" from the attacking unit.
• All of the models in the target unit are within 1" of a terrain feature.
• It is impossible for the attacker to draw a straight line from the closest
point of a model in the attacking unit to the closest point of a model in
the target unit without that line passing across a terrain feature.

The way "behind cover" is defined, read strictly it seems to imply that you can only ever be behind cover when you are the defender of an attack - because you have to be more than 3" from the attacking unit in criteria 1. If the Shadow Warriors are the ones attacking, that would appear not to meet the criteria, even if they would be behind cover and therefore "in cover" if they were being attacked. 

Does this mean Shadow Warriors only get the +1 hit/wound if they're wholly within terrain? Or is there something I'm missing that would allow them to get the bonus when behind terrain as defined by all the criteria besides not being more than 3" from the attacking unit (since they are the attacking unit)?

Edited April 6, 2022 by yukishiro1

[Liquidsteel]

It seems you answered your own question, being "in" and "behind" cover are two different things, where being "behind" only applies when you are the defender from a ranged attack.

 

[yukishiro1]

Well, not quite. Being "in cover" includes being "behind cover." It's just that to be behind cover, it seems per the rules you have to be actively under attack. 

I was mainly trying to figure out if I had missed something somewhere. It doesn't look like I have. So the result is that shadow warriors actually only get the bonus attacks if they are wholly within a terrain feature, which is probably what the datasheet actually ought to say since it isn't technically possible to be behind cover when you're attacking. 

Edited April 11, 2022 by yukishiro1