Battlefield toys. All of them essential (really.) Not sure why the Orcs and Goblins did so well out of them and the Humans had to wait though! It also seems that Orcs and Goblin crews were interchangeable, several being described as Orc or Goblin in different sources.
MD1 Goblin King's Battle Chariot
MD2 Skull Crusher, Goblin Trebuchet
MD3 Lead Belcher, Goblin Organ Gun
MD4 Elven Attack Chariot
MD5 Man Mangler, Orc Stone Thrower
MD6 Goblin Battle Chariots
MD7 Gob-Lobber
MD8 Skeleton War Machines
MD9 Goblin War Chariot