diff --git a/Hcs.WebApp/Components/Pages/Campaigns.razor b/Hcs.WebApp/Components/Pages/Campaigns.razor
index 77d66aa..4bc521a 100644
--- a/Hcs.WebApp/Components/Pages/Campaigns.razor
+++ b/Hcs.WebApp/Components/Pages/Campaigns.razor
@@ -93,7 +93,10 @@
 
     async Task RowExpandAsync(Campaign campaign)
     {
-        // TODO
+        if (campaign.Operations == null)
+        {
+            campaign.Operations = await HeadquartersService.GetOperationsAsync(campaign.Id);
+        }
     }
 
     void ChangeState(CampaignsPageState state)
diff --git a/Hcs.WebApp/Services/HeadquartersService.cs b/Hcs.WebApp/Services/HeadquartersService.cs
index 7b1c685..41096dd 100644
--- a/Hcs.WebApp/Services/HeadquartersService.cs
+++ b/Hcs.WebApp/Services/HeadquartersService.cs
@@ -41,7 +41,7 @@ namespace Hcs.WebApp.Services
                           select operation).ToListAsync();
         }
 
-        public async Task<IEnumerable<Operation>> GetOperationsAsync(int campaignId)
+        public async Task<ICollection<Operation>> GetOperationsAsync(int campaignId)
         {
             using var context = GetNewContext();
             return await (from operation in context.Operations