From LOS Warmachine University
A stationary model is effectively frozen. Its DEF is reduced to 5 (which may as well be zero), it's auto-hit in melee, does not have a melee range itself, and...
|it cannot||it can|
|The difference to being knocked down, in terms of what you can/can't do is:
To get rid of stationary, a model has to either:
- Spend Fury/Focus during the Maintenance Phase
- Wait for stationary to expire (it normally lasts one round)
- Have a spell/ability cast on it by another model that lets it remove stationary "for free".