There is a new WW2 strategy game out, called Panzer Corps.
http://panzer-corps.com/more
This is the evolution of Panzer General and it delivers everything and more I could hope for from it.
Features
400 unit types, divided into 19 unit classes with 20 detailed parameters to identify units abilities, 17 terrain types affecting gameplay in various way. Panzer Corps will celebrate the glory days of strategy gaming with the aim of attracting new players to the genre;
Campaign: all 26 scenarios are combined into a large campaign tree with several entry points at various stages of the war. Depending on the outcome of each battle (decisive victory, marginal victory or defeat), the player will be faced with different challenges and a progress along different parts of the campaign tree;
Nations: all major and many minor nations represented: Germany, Italy, Poland, France, Great Britain, USA, USSR, Norway, Belgium, Netherlands, Albania, Romania, Greece and more.
Core units that travel with you throughout the campaign gaining experience and that can be upgraded as new weapon technologies become available.
Can be purchased from
http://www.matrixgames.com/products/399/details/Panzer.Corps. or
http://slitherine.com/games/panzer_corps_pc