Strategy First

Enemy Engaged 2

Advertised Features:

Realistic flight physics
2 flyable gunships (e.g. RAH-66 Comanche (USA), KA-52 Hokum (Russia))
Three theaters of war (e.g. Lebanon, Taiwan and Korea)
Dynamic real-time battlefields. No linear mission plot, scripted events or predefined unit behavior.

Disciples III: Renaissance

Disciples 3 is a turn-based strategy game in the vein of Heroes of Might & Magic V or King's Bounty.
The main feature that sets Disciples apart is that every unit in a hero's army does not represent a group, but is a single creature which can be healed or even resurrected between combats, and will transform into an upgraded version of itself as soon as it gains enough XP.

Battle of Europe

Battle of Europe is an arcade flight sim, set during WWII. The game initially offers ten missions, with six more for high scores. A wide variety of missions are offered, including the fictional option of taking out Hitler.

Cossacks: European Wars

Cossacks: European Wars is a historical RTS from CDV Software and GSC Gameworld. You command armies of one of many European countries in the 17th and 18th centuries and fight massive battles with armies of rival countries.