Add Operation Atilla campaign.

It's a Cyprus invasion campaign - what's not to like!

changelog.md

@@ -14,7 +14,8 @@ Saves from 3.x are not compatible with 4.0.
 
 * **[Campaign]** Squadrons now have a maximum size and killed pilots replenish at a limited rate.
 * **[Campaign]** Added an option to disable levelling up of AI pilots.
-* **[Campaign]** Added Russian Intervention 2015 campaign on Syria.
+* **[Campaign]** Added Russian Intervention 2015 campaign on Syria, for a small and somewhat realistic Russian COIN scenario.
+* **[Campaign]** Added Operation Atilla campaign on Syria, for a reasonably large invasion of Cyprus scenario.
 * **[Campaign AI]** AI will plan Tanker flights.
 * **[Campaign AI]** Removed max distance for AEW&C auto planning.
 * **[Economy]** Adjusted prices for aircraft to balance out some price inconsistencies.

resources/campaigns/Operation_Atilla.json

@@ -0,0 +1,11 @@
+{
+  "name": "Syria - Operation Atilla",
+  "theater": "Syria",
+  "authors": "Malakhit",
+  "recommended_player_faction": "Turkey 2005",
+  "recommended_enemy_faction": "Greece 2005",
+  "description": "<p>This is based on the Turkish invasion of Cyprus, and the Greek defense of the island. You must make sure to keep your beachhead at all costs, otherwise reclaiming it will be tricky. It is recommended to reduce the per-turn income rate for both factions in this scenario due to the large oil depots both sides have - around 20% is probably reasonable.</p>",
+  "version": "6.0",
+  "miz": "Operation_Atilla.miz",
+  "performance": 2
+}