diff --git a/composeApp/src/commonMain/composeResources/drawable/ic_camping_24dp.xml b/composeApp/src/commonMain/composeResources/drawable/ic_camping_24dp.xml
new file mode 100644
index 0000000..8b8a019
--- /dev/null
+++ b/composeApp/src/commonMain/composeResources/drawable/ic_camping_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+  <path
+      android:pathData="M80,880v-186l350,-472 -70,-94 64,-48 56,75 56,-75 64,48 -70,94 350,472v186L80,880ZM480,289L160,720v80h120l200,-280 200,280h120v-80L480,289ZM378,800h204L480,658 378,800ZM480,520 L680,800 480,520 280,800 480,520Z"
+      android:fillColor="#5f6368"/>
+</vector>
diff --git a/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionPage.kt b/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionPage.kt
index 52027fc..6ab0a45 100644
--- a/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionPage.kt
+++ b/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionPage.kt
@@ -15,8 +15,10 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
+import com.pixelized.desktop.lwa.ui.composable.error.ErrorSnackHandler
 import kotlinx.coroutines.launch
 import lwacharactersheet.composeapp.generated.resources.Res
+import lwacharactersheet.composeapp.generated.resources.ic_camping_24dp
 import lwacharactersheet.composeapp.generated.resources.ic_visibility_24dp
 import lwacharactersheet.composeapp.generated.resources.ic_visibility_off_24dp
 import org.koin.compose.viewmodel.koinViewModel
@@ -38,6 +40,11 @@ fun GMActionPage(
     GMActionContent(
         actions = actions,
         scroll = scroll,
+        onPartyHeal = {
+            scope.launch {
+                viewModel.onPartyHeal()
+            }
+        },
         onPartyVisibility = {
             scope.launch {
                 viewModel.onPlayerVisibility()
@@ -49,6 +56,10 @@ fun GMActionPage(
             }
         },
     )
+
+    ErrorSnackHandler(
+        error = viewModel.error,
+    )
 }
 
 @Composable
@@ -57,6 +68,7 @@ fun GMActionContent(
     scroll: ScrollState,
     spacing: Dp = 8.dp,
     actions: State<ActionPageUio?>,
+    onPartyHeal: () -> Unit,
     onPartyVisibility: () -> Unit,
     onNpcVisibility: () -> Unit,
 ) {
@@ -66,6 +78,12 @@ fun GMActionContent(
             .padding(vertical = spacing, horizontal = spacing),
         verticalArrangement = Arrangement.spacedBy(space = spacing),
     ) {
+        GMAction(
+            modifier = Modifier.fillMaxWidth(),
+            icon = Res.drawable.ic_camping_24dp,
+            label = "Soigner le groupe de joueur",
+            onAction = onPartyHeal,
+        )
         actions.value?.party?.let { party ->
             GMAction(
                 modifier = Modifier.fillMaxWidth(),
diff --git a/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionViewModel.kt b/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionViewModel.kt
index f858d05..0490f8a 100644
--- a/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionViewModel.kt
+++ b/composeApp/src/commonMain/kotlin/com/pixelized/desktop/lwa/ui/screen/gamemaster/action/GMActionViewModel.kt
@@ -3,8 +3,12 @@ package com.pixelized.desktop.lwa.ui.screen.gamemaster.action
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.pixelized.desktop.lwa.repository.campaign.CampaignRepository
+import com.pixelized.desktop.lwa.repository.characterSheet.CharacterSheetRepository
 import com.pixelized.desktop.lwa.repository.network.NetworkRepository
+import com.pixelized.desktop.lwa.ui.composable.error.ErrorSnackUio
 import com.pixelized.shared.lwa.protocol.websocket.GameMasterEvent
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.distinctUntilChanged
@@ -12,10 +16,14 @@ import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn
 
 class GMActionViewModel(
+    private val characterRepository: CharacterSheetRepository,
     private val networkRepository: NetworkRepository,
-    campaignRepository: CampaignRepository,
+    private val campaignRepository: CampaignRepository,
 ) : ViewModel() {
 
+    private val _error = MutableSharedFlow<ErrorSnackUio>()
+    val error: SharedFlow<ErrorSnackUio> get() = _error
+
     val actions: StateFlow<ActionPageUio?> = campaignRepository.campaignFlow
         .map {
             ActionPageUio(
@@ -30,19 +38,55 @@ class GMActionViewModel(
             initialValue = null,
         )
 
-    suspend fun onNpcVisibility() {
-        networkRepository.share(
-            GameMasterEvent.ToggleNpc(
-                timestamp = System.currentTimeMillis(),
+    suspend fun onPartyHeal() {
+        campaignRepository.campaignFlow.value.characters.forEach { characterSheetId ->
+            val sheet = characterRepository.characterDetail(
+                characterSheetId = characterSheetId,
+            ) ?: return@forEach
+
+            val updated = sheet.copy(
+                damage = 0,
+                fatigue = 0,
+                diminished = 0,
             )
-        )
+
+            if (sheet != updated) {
+                try {
+                    characterRepository.updateCharacter(
+                        sheet = updated,
+                        create = false,
+                    )
+                } catch (exception: Exception) {
+                    val message = ErrorSnackUio.from(exception = exception)
+                    _error.emit(message)
+                }
+            }
+        }
+    }
+
+    suspend fun onNpcVisibility() {
+        try {
+            networkRepository.share(
+                GameMasterEvent.ToggleNpc(
+                    timestamp = System.currentTimeMillis(),
+                )
+            )
+        } catch (exception: Exception) {
+            val message = ErrorSnackUio.from(exception = exception)
+            _error.emit(message)
+        }
     }
 
     suspend fun onPlayerVisibility() {
-        networkRepository.share(
-            GameMasterEvent.TogglePlayer(
-                timestamp = System.currentTimeMillis(),
+        try {
+            networkRepository.share(
+                GameMasterEvent.TogglePlayer(
+                    timestamp = System.currentTimeMillis(),
+                )
             )
-        )
+        } catch (exception: Exception) {
+            val message = ErrorSnackUio.from(exception = exception)
+            _error.emit(message)
+        }
     }
 }
\ No newline at end of file