Emil 109 wrote:
If a major attack comes up, do we get the +3 in the detection die-roll?
Sounds like "no" but I can't find it in the rules.
The target card is only used to determine the target, not major or minor raid. The raid composition is whatever elite Me 110s are available, and no force cards (or event cards) are drawn. See the event description on page 24 of the Lion rulebook.