Linear 6 mission campaign about fictional war between NATO and Russian federation put you into role of Russian SU-25T pilot.
Difficulty is easy-medium.
Extract zip file into C:\Users\*yourname*\Saved Games\DCS\Missions\Campaigns\en directory
The war began six months ago. Ukrainian units with NATO support occupied the east of Ukraine, the Crimea and proceed further east into Russian territory. Georgia has tried to attack us from the south, but after two months it has withdrawn. Turkey has decided not to interfere in the conflict. After months of heavy fighting, the armies of both sides were severely exhausted. Modern fighters and anti air systems were destroyed in first weeks of conflict. Speed of progress slowed. Front line is now located east from Krasnodar. Help our units retake the lost territory of the Russian Federation.