How many checks do normal units make when moving through dangerous terrain? One per move? One per piece of terrain?

One per move per piece of terrain?

One per move, IIRC.

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SG

Ghost's Paint Blog, where everything goes that isn't something else.

One additional clarification: I guess tyranid skimmer war engines (Id est, harridans), who don't suffer dangerous terrain tests for normal ground, do suffer dangerous terrain tests for getting into terrain when they are skimmers, right (good thing to clarify in the "mobility" special rule)?

From the rules

But why, then, do skimmers not test if they end each separate move in dangerous terrain.

I don't think that skimmers SHOULD test if they use a double move to fly over a forest, only that it's not obvious at all that they shouldn't, and that it therefore deserves a FAQ entry.

The don't enter the terrain unless they interact with it? So why would they test?

So the rule is basically, skimmers take dangerous tests at the start or end of their activation, or when they 'interact' with terrain?

Now I am confused. I had thought a March was 3 separate moves. I know it is for the purposes of loading/unloading troops. I had also thought it was in respect of things like ZoC.

I don't see why skimmers are nt the same. It is not a teleport ability. If you had a skimmer with a 30cm move trying to cross a terrain piece 80cm wide, then I would have expected it to take into account the terrain after each move- i.e. after 30cm, 60cm and end of activation. If that involved dangerous terrain tests 3 times then so be it.

Sorry if I am being thick but I don't see how it would be any other way.

also if a skimmer begins its move in one forest and ends it in a different forest, shouldnt it check twice?

Yes as the rule is starting or entering.

Mi previous post was overseen, I'm afraid, so I re-ask it here:

Mobility looks pretty clear to me that Tyranid AV's and WE's don't take dangerous terrain tests so the harridan is safe to land in terrain normally classed as dangerous to WE's

Good news. Thanks. Could be both ways, so better ask.

A (hopefully) related question.

If a Wraithgate is placed in dangerous terrain, would vehicles have to test if they entered play through it? Would the answer be differenet depending on if the dangerous terrain is a forest or a rubble field?

Yes, they match the requirement of entering such terrain so would need to test. As forests and rubble are both dangerous to AV's the answer is the same.