Since it was founded, Slitherine has been producing a series of excellent wargames with both a strategic component that covers an entire war on a province level, and a tactical component that involves battles of large numbers of soldiers in a 3D representation. Legion has been one of their most successful titles, perhaps because it covers a huge period of Roman history, with 20 something scenarios and 3 complete campaign games, along with extensive diplomatic rules to cover relationships with other powers that can affect the outcome of a war. If you're interested in the period, it's well worth looking into.
