Inferno Shell
(Rule)Description: If a model hit by an Inferno shell is not killed, roll a D6. On a 4+ they are lit on fire.
For the model that was lit on fire, on it's turn check the Fire Test Table:
1-5: Take a further hit from the same weapon profile. If not slain, move it randomly and it cannot do anything else that turn. Vehicles, Dreadnoughts, and Terminators can ignore the flames and move & fire as normal.
6: Fire goes out. The model may not move nad fire during the current turn but may fight normally from its following turn onwards. Vehicles, Dreadnoughts, and Terminators can ignore the flames and move & fire as normal.
See Imperial Guard rulebook pg.25 for further burn rules