The following should work...
To change the animations to those of a two handed axe, you'll need to edit the modeldb file (BACK IT UP FIRST!!!!)
Search for the entry for the Dismounted Halbbruder. Down at the bottom of the entry you will see the lines for the animations which should look like this:
Code:
1 4 None
20 MTW2_Halberd_Primary
22 MTW2_Halberd_Secondary 2
17 MTW2_Pike_primary
You need to copy the animation entry from a 2-handed axe wielding unit such as the varangian guard or the berdiche axemen so that the entry looks like this:
Code:
1 4 None
11 MTW2_2H_Axe 0
1
19 MTW2_2H_Axe_primary 0
Save and exit.
However, if I remember rightly (and I fully accept the fact that I might not
), the animations used in SS are part of the unit balancing system. So changing the animations may unbalance that unit.