Dobbsy wrote:
I'm just curious as to what the exact effects are or could be.
In theory, you could have a formation with "high-Initiative units" and "low-Initiative units" where all the high-Initiative units are destroyed. At that point, you have to keep track of which low-Initiative units originally came from the high-Initiative formation.
For example, an Aspect Host in Wave Serpents could have all the Warriors destroyed, leaving only the Wave Serpents. At that point, the Serpents look just like Serpents that were attached to a Guardian Host. However, the Aspects' Serpents would be Initiative 1+, while the Guardians' serpents would be Initiative 2+.
Same thing for any other formation with elite troops mixed with line troops, such as Fire Warriors with attached Crisis Suits or Blood Claws/Grey Hunters.
In practice this is rarely, if ever, a problem. It's very uncommon and, if it does happen, it affects so few formations that it's easy to keep track of.
Quote:
Is it correct that the initiative is based on the original base formation type?
Yes. All army lists to date list Initiative by formation, not by unit type. Formations activate. Individual units do not.