When your lines are too thin and your opponent is attacking, it is time to organise a Hedgehog Defence.
A defence organised around strong points around small villages, easy to defend from every directions but… easy to bypass, too.
A unit organising itself into Hedgehog Defence will lose some nasty traits like “Streched Lines”, “Exposed Flanks” or “Stragglers”.
The main drawback of this strategy is that your opponent can easily infiltrate your lines or trap you in a pocket.
This action is only available to the Germans.