An Abteilung looses 4 H2H and 2 stamina compared to a large unit. It is also 16 points cheaper than the large unit.
C0E page 71. Each cavalry regiment with the Abteilung rule can be replaced by 2 3 or 4 Abteliungs. Here is the actual text:
Because of this common ‘Abteilungsweise’ employment of splitting up regiments into detachments, we allow Austrian regiments to be played as either a single regiment of 3-4 squadrons as normal, or else as two, three or even four Small sized Abteilung of the same cavalry regiment.
So, if you take the light cavalry brigade on page 180, it starts of with a minimum of 1 large cavalry regiment. This can be down graded to a standard or small sized regiment, or be replaced with 2-4 Abteilungs (which have the same stats as a small regiment. The brigade can then add 1 more light cavalry regiment with the same options. The brigade can add 3rd regiment (of dragoons). The Dragoons can only se can be upgraded as large or small units but cannot have abteilungs
Hope that is clear.
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