Games like Ashes of the Singularity: Escalation - Secret Missions

If you finished Ashes of the Singularity: Escalation - Secret Missions, the closest matches are Battlefleet Gothic: Armada 2, Dark Reign: The Future of War, Starfront: Collision, Planet X2 and Overlord. All 6 share its real time strategy (rts) genre and are ranked by how closely their themes and modes overlap.