diff --git a/mods/ts/bits/typeglyphs.shp b/mods/ts/bits/typeglyphs.shp
new file mode 100644
index 0000000000..b16d524eb1
Binary files /dev/null and b/mods/ts/bits/typeglyphs.shp differ
diff --git a/mods/ts/rules/defaults.yaml b/mods/ts/rules/defaults.yaml
index 28490e78fe..40d5fbee5a 100644
--- a/mods/ts/rules/defaults.yaml
+++ b/mods/ts/rules/defaults.yaml
@@ -625,6 +625,13 @@
 		Categories: Infantry
 	GrantConditionOnTunnelLayer:
 		Condition: inside-tunnel
+	WithDecoration@UNDERGROUND:
+		RequiresCondition: inside-tunnel
+		Position: Center
+		Image: typeglyphs
+		Sequence: infantry
+		Palette: player
+		IsPlayerPalette: true
 
 ^RegularInfantryDeath:
 	WithDeathAnimation@normal:
@@ -820,6 +827,13 @@
 		Categories: Vehicle
 	GrantConditionOnTunnelLayer:
 		Condition: inside-tunnel
+	WithDecoration@UNDERGROUND:
+		RequiresCondition: inside-tunnel
+		Position: Center
+		Image: typeglyphs
+		Sequence: vehicle
+		Palette: player
+		IsPlayerPalette: true
 
 ^Tank:
 	Inherits: ^Vehicle
diff --git a/mods/ts/rules/nod-vehicles.yaml b/mods/ts/rules/nod-vehicles.yaml
index f4079ad8dd..ed13b8e4bc 100644
--- a/mods/ts/rules/nod-vehicles.yaml
+++ b/mods/ts/rules/nod-vehicles.yaml
@@ -439,6 +439,8 @@ SAPC:
 		SubterraneanTransitionSound: subdril1.aud
 	Carryable:
 		RequiresCondition: !submerged
+	WithDecoration@UNDERGROUND:
+		RequiresCondition: inside-tunnel || submerged
 
 SUBTANK:
 	Inherits: ^Tank
@@ -487,6 +489,8 @@ SUBTANK:
 		SubterraneanTransitionSound: subdril1.aud
 	Carryable:
 		RequiresCondition: !submerged
+	WithDecoration@UNDERGROUND:
+		RequiresCondition: inside-tunnel || submerged
 
 STNK:
 	Inherits: ^Tank
diff --git a/mods/ts/rules/shared-vehicles.yaml b/mods/ts/rules/shared-vehicles.yaml
index d66e6a658c..d6cd4c5b45 100644
--- a/mods/ts/rules/shared-vehicles.yaml
+++ b/mods/ts/rules/shared-vehicles.yaml
@@ -107,6 +107,8 @@ HARV:
 		ResourceSequences:
 			Tiberium: pip-green
 			BlueTiberium: pip-blue
+	WithDecoration@UNDERGROUND:
+		Sequence: harvester
 
 LPST:
 	Inherits: ^Tank
diff --git a/mods/ts/sequences/misc.yaml b/mods/ts/sequences/misc.yaml
index b2c62b59f8..6a36ce28b0 100644
--- a/mods/ts/sequences/misc.yaml
+++ b/mods/ts/sequences/misc.yaml
@@ -644,3 +644,14 @@ dig:
 		Length: *
 		ZOffset: 511
 		Offset: 0, 0, 24
+
+typeglyphs:
+	infantry:
+	vehicle:
+		Start: 1
+	helicopter:
+		Start: 2
+	harvester:
+		Start: 3
+	structure:
+		Start: 4