diff --git a/changelog.md b/changelog.md
index 3471ec0b..a4e7f92a 100644
--- a/changelog.md
+++ b/changelog.md
@@ -15,6 +15,7 @@
 * **[Plugins]** Fix bug where changes to plugin options doesn't do anything.
 * **[Campaign Management]** Fix bug in procurement when no squadrons are present.
 * **[Layouts]** Fix edge-case bug layout's group size.
+* **[Campaign Design]** Preset groups assigned to specific TGOs not working as intended.
 
 # Retribution v1.1.0
 
diff --git a/game/theater/start_generator.py b/game/theater/start_generator.py
index 56446b64..b15b5cb4 100644
--- a/game/theater/start_generator.py
+++ b/game/theater/start_generator.py
@@ -310,6 +310,13 @@ class AirbaseGroundObjectGenerator(ControlPointGroundObjectGenerator):
             and all([u in self.faction.accessible_units for u in fg.units])
         )
         if valid_fg:
+            for layout in fg.layouts:
+                for lg in layout.groups:
+                    for ug in lg.unit_groups:
+                        if not fg.has_unit_for_layout_group(ug) and ug.fill:
+                            for g in self.faction.ground_units:
+                                if g.unit_class in ug.unit_classes:
+                                    fg.units.append(g)
             unit_group = fg
             assert fg
             self.armed_forces.add_or_update_force_group(fg)