Few vague informations about combat on czech sites:
Fighting from horseback will be possible. There will be also done motion capture for horses.
There will be probably only 1 max 2 big battles, but its real, not some render on background, you move around freely.
Most fights will be 1v1, small skirmishes possible, but will be hard to win outnumbered.
Combat system heavy stamina based.
8 attack directions, sword after contact with other weapon or environment will be continue move base on physics calculation.
Only one block button, holding block consume a lot of stamina, so you need to time it. Attacking consume stamina, too.