Only three episodes into the final season, and the rebels of 'Spartacus: War of the Damned' have accomplished some amazing feats. With the armies of Marcus Crassus and his "wolf" Julius Caesar nipping at their heels however, might the greatest threat Spartacus and his band of gladiators face be from within? We've got a few new sneak peeks at tomorrow's all-new episode "Decimation" that pit brother against brother in a fatal battle for the rebellion inside!

After a week's hiatus, 'Spartacus: War of the Damned ' will return with a vengeance this Friday for "Decimation," picking up from the events of "Men of Honor" that saw Tiberius (Christian Antidormi) and his men promptly rousted by the might of the rebels and their new pirate allies. The victory will not prove so joyous for the rebellion however, as tensions continue to mount over the captive Romans within Sinuessa en Valle, pitting brother against brother!

Starz has released two new clips from "Decimation" that preview internal conflicts on either side, as Gannicus (Dustin Clare) and Crixus (Manu Bennett) come to blows in in the middle of the city! Elsewhere in the second clip, Tiberius and his men have quite a bit to answer for over their failed assault on Spartacus, leading Crassus to revive an ancient practice that will see the men pay dearly.

Check out two new clips from tomorrow's all-new 'Spartacus: War of the Damned' episode "Decimation" below, and give us your predictions for the final season in the comments!