Greenskin War Machines
From Warhammer - The Old World - Lexicanum
Greenskin War Machines are usually cheerfully lashed together as required. If they fall apart they can be quickly fixed with spit and string. Goblins are nimbled-fingered and quite good at that sort of thing, whereas Orcs are good at bossing them around. Nature has created an ideal work force for the greenskin race.
- Warhammer Armies: Orcs & Goblins (7th Edition), Needs Citation