Invasion in peril! Republic forces struggle to take Umbara, a hostile planet completely enshrouded in darkness. Jedi General Pong Krell and Captain Rex lead a battalion against a constant attack by a brutal enemy. Krell's aggressive and reckless strategies backfire, killing many clones. Despite the Jedi general's dangerous tactics, Captain Rex's squad successfully captures a critical airbase. This further fuels the mistrust of Krell's leadership, dividing his men.

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