Orcs expect the smaller greenskins to run awayy and it doesn't really surprise them when they do. The sight of fleeing Goblins and Snotlings simply reminds the bigger and bolder Orcs why they are best. Consequently when a Goblin unit. Snotling Swarm or Snotling Pump Wagon is destroyed, breaks or flees pat. Orc units do not need to test for panic. See the Viarhammer rulebook. pages 80-81
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