North Battlement Sector is a free adventure for the OD&D Terminal Space supplement, though the rules are actually based on Labyrinth Lord's Advanced Edition Companion. The document details the sector in the title using a Traveller-style sector hexmap, filled with goblin and hobgoblin marauders, pirates, space rays, a sorcerer, a huge dust cloud, asteroid dungeons, demonic hosts, and other assorted monsters. This is followed by new items, and notes on converting standard monsters.