[Idoneth Deepkin - Akhelian Corps]

I am also confused by this rule:

 

For example if i make an attack with a unit of eels from this battalion. Can i re-roll all failed hit rolls of that unit, or just one single dice?

 

... Sorry for the double post, thought the first one didn't work...

[Idoneth Deepkin - Akhelian Corps]

But can i, for example, reroll all failed hit rolls of a unit in this batallion, or just one dice of the unit that failed the hit roll?