Serbia '14

[ComradeP]

Movement point costs for units using Foot movement are multiplied by 1.5 during Mud turns.
Movement points costs for units using Ski movement are multiplied by 4 during Mud turns.

You can check the penalties in the lower part of the parameter data dialog after scrolling through most of the information.

The MG units can only be moved in T-mode and will always use Ski movement, but you could consider switching the Alpine Jaeger units to Deployed mode if they don't use Ski movement as their basic movement type. That way, the 1.5x MP cost penalty applies instead of the 4x MP cost penalty.