Advanced Tobruk System games are part of a 20th century tactical combat series published by Critical Hit.
Introductory ATS Games:
Full games in the ATS Series include:
Expansions (which require at least one full ATS game to play) include:
Table Top line, ATS TT Expansions:
features smaller counters: 1/2" for Personnel, 5/8" for Vehicles
(note that many ATS TT titles are Reprints of ATS games, and are denoted with a '+')
For a current list see http://www.boardgamegeek.com/geeklist/15765
Many ATS material on ATS on the Table.
ATS: Tobruk Gamers Guide