Centurion: Tactical Warfare, 100B.C.-600A.D. (1971)

Released with Strategy & Tactics magazine #25 (January/February 1971) and later available from SPI as a separate game.

Magazine References: Fire & Movement

Fire & Movement # 146 Centurion: Tactical Warfare, 100B.C.-600A.D. – “Centurion Marches On” (Variant/Expansion) Joseph Miranda