diff --git a/core/src/com/unciv/logic/BackwardCompatibility.kt b/core/src/com/unciv/logic/BackwardCompatibility.kt
index cde9ae266d..5631341293 100644
--- a/core/src/com/unciv/logic/BackwardCompatibility.kt
+++ b/core/src/com/unciv/logic/BackwardCompatibility.kt
@@ -15,7 +15,7 @@ import com.unciv.models.ruleset.Ruleset
 
 /**
  * Container for all temporarily used code managing transitions from deprecated elements to their replacements.
- * 
+ *
  * Please place ***all*** such code here and call  it _only_ from [GameInfo.setTransients].
  * Functions are allowed to remain once no longer used if you think they might serve as template for
  * similar usecases in the future. Please comment sufficiently :)
@@ -43,9 +43,9 @@ object BackwardCompatibility {
         for (city in civilizations.asSequence().flatMap { it.cities.asSequence() }) {
 
             changeBuildingNameIfNotInRuleset(ruleSet, city.cityConstructions, "Hanse", "Bank")
-            
+
             for (building in city.cityConstructions.builtBuildings.toHashSet()) {
-                
+
                 if (!ruleSet.buildings.containsKey(building))
                     city.cityConstructions.builtBuildings.remove(building)
             }
@@ -193,6 +193,20 @@ object BackwardCompatibility {
         }
     }
 
+    /** Convert from Fortify X to Fortify and save off X */
+    fun GameInfo.convertFortify() {
+        val reg = Regex("""^Fortify\s+(\d+)([\w\s]*)""")
+        for (civInfo in civilizations) {
+            for (unit in civInfo.getCivUnits()) {
+                if (unit.action != null && reg.matches(unit.action!!)) {
+                    val (turns, heal) = reg.find(unit.action!!)!!.destructured
+                    unit.turnsFortified = turns.toInt()
+                    unit.action = "Fortify$heal"
+                }
+            }
+        }
+    }
+
     private fun isOldFormat(manager: BarbarianManager): Boolean {
         val keys = manager.camps.keys as Set<Any>
         val iterator = keys.iterator()
diff --git a/core/src/com/unciv/logic/GameInfo.kt b/core/src/com/unciv/logic/GameInfo.kt
index cd437eae74..3cf107771f 100644
--- a/core/src/com/unciv/logic/GameInfo.kt
+++ b/core/src/com/unciv/logic/GameInfo.kt
@@ -2,6 +2,7 @@ package com.unciv.logic
 
 import com.unciv.Constants
 import com.unciv.UncivGame
+import com.unciv.logic.BackwardCompatibility.convertFortify
 import com.unciv.utils.debug
 import com.unciv.logic.BackwardCompatibility.guaranteeUnitPromotions
 import com.unciv.logic.BackwardCompatibility.migrateBarbarianCamps
@@ -435,6 +436,8 @@ class GameInfo {
         for (civInfo in civilizations) civInfo.setTransients()
         for (civInfo in civilizations) civInfo.updateSightAndResources()
 
+        convertFortify()
+
         for (civInfo in civilizations) {
             for (unit in civInfo.getCivUnits())
                 unit.updateVisibleTiles(false) // this needs to be done after all the units are assigned to their civs and all other transients are set
diff --git a/core/src/com/unciv/logic/map/MapUnit.kt b/core/src/com/unciv/logic/map/MapUnit.kt
index 6190da6282..ffac2e530b 100644
--- a/core/src/com/unciv/logic/map/MapUnit.kt
+++ b/core/src/com/unciv/logic/map/MapUnit.kt
@@ -174,6 +174,7 @@ class MapUnit {
     var promotions = UnitPromotions()
     var due: Boolean = true
     var isTransported: Boolean = false
+    var turnsFortified = 0
 
     var abilityUsesLeft: HashMap<String, Int> = hashMapOf()
     var maxAbilityUses: HashMap<String, Int> = hashMapOf()
@@ -234,6 +235,7 @@ class MapUnit {
         toReturn.health = health
         toReturn.action = action
         toReturn.attacksThisTurn = attacksThisTurn
+        toReturn.turnsFortified = turnsFortified
         toReturn.promotions = promotions.clone()
         toReturn.isTransported = isTransported
         toReturn.abilityUsesLeft.putAll(abilityUsesLeft)
@@ -450,7 +452,7 @@ class MapUnit {
 
     fun getFortificationTurns(): Int {
         if (!isFortified()) return 0
-        return action!!.split(" ")[1].toInt()
+        return turnsFortified
     }
 
     // debug helper (please update comment if you see some "$unit" using this)
@@ -639,11 +641,11 @@ class MapUnit {
     }
 
     fun fortify() {
-        action = "Fortify 0"
+        action = "Fortify"
     }
 
     fun fortifyUntilHealed() {
-        action = "Fortify 0 until healed"
+        action = "Fortify until healed"
     }
 
     fun fortifyIfCan() {
@@ -672,6 +674,7 @@ class MapUnit {
     }
 
     fun useMovementPoints(amount: Float) {
+        turnsFortified = 0
         currentMovement -= amount
         if (currentMovement < 0) currentMovement = 0f
     }
@@ -842,15 +845,11 @@ class MapUnit {
             && getTile().improvementInProgress != null
             && canBuildImprovement(getTile().getTileImprovementInProgress()!!)
         ) workOnImprovement()
-        if (currentMovement == getMaxMovement().toFloat() && isFortified()) {
-            val currentTurnsFortified = getFortificationTurns()
-            if (currentTurnsFortified < 2)
-                action = action!!.replace(
-                    currentTurnsFortified.toString(),
-                    (currentTurnsFortified + 1).toString(),
-                    true
-                )
+        if (currentMovement == getMaxMovement().toFloat() && isFortified() && turnsFortified < 2) {
+            turnsFortified++
         }
+        if (!isFortified())
+            turnsFortified = 0
 
         if (currentMovement == getMaxMovement().toFloat() // didn't move this turn
             || hasUnique(UniqueType.HealsEvenAfterAction)