Mountaineer 45th Cerulean Mountain Infantry; 3rd Davion Guards
- Type: Foot Infantry
- Role: Ambusher
- Tech Base: Inner Sphere (3064)
- Size: 14 (2 squads of 7 troopers)
- Transport Weight: 1.5 tons
- Movement: 1
- Protection: Federated Suns Armor Kit (1)
- Weapons:
- Federated-Barrett M42B Rifle × 12
- Light SRM × 2
- Specializations:
- Mountain Troops
- Master Unit List: 2242
- Battle Value: 81
Availability
Civil War
- Capellan Confederation
- Circinus Federation
- Draconis Combine
- Federated Commonwealth
- Federated Suns
- Free Rasalhague Republic
- Free Worlds League
- Kell Hounds
- Lyran Alliance
- Magistracy of Canopus
- Mercenary
- Outworlds Alliance
- Wolf's Dragoons
Jihad
- Capellan Confederation
- Circinus Federation
- Draconis Combine
- Federated Suns
- Free Rasalhague Republic
- Free Worlds League
- Fronc Reaches
- Kell Hounds
- Lyran Alliance
- Magistracy of Canopus
- Mercenary
- Outworlds Alliance
- Wolf's Dragoons
Early Republic
- Capellan Confederation
- Draconis Combine
- Duchy of Andurien
- Duchy of Tamarind-Abbey
- Federated Suns
- Free Worlds League - Non-Aligned Worlds
- Fronc Reaches
- Kell Hounds
- Lyran Commonwealth
- Magistracy of Canopus
- Marik-Stewart Commonwealth
- Mercenary
- Oriente Protectorate
- Outworlds Alliance
- Pirate
- Raven Alliance
- Regulan Fiefs
- Republic of the Sphere
- Rim Commonality
- Solaris 7
- Wolf's Dragoons
Late Republic
- Capellan Confederation
- Draconis Combine
- Duchy of Andurien
- Duchy of Tamarind-Abbey
- Federated Suns
- Free Worlds League - Non-Aligned Worlds
- Fronc Reaches
- Kell Hounds
- Lyran Commonwealth
- Magistracy of Canopus
- Marik-Stewart Commonwealth
- Mercenary
- Oriente Protectorate
- Pirate
- Raven Alliance
- Regulan Fiefs
- Republic of the Sphere
- Rim Commonality
- Solaris 7
- Wolf's Dragoons
Dark Age
- Capellan Confederation
- Draconis Combine
- Duchy of Andurien
- Duchy of Tamarind-Abbey
- Federated Suns
- Free Worlds League
- Free Worlds League - Non-Aligned Worlds
- Fronc Reaches
- Kell Hounds
- Lyran Commonwealth
- Magistracy of Canopus
- Marik-Stewart Commonwealth
- Mercenary
- Oriente Protectorate
- Pirate
- Raven Alliance
- Regulan Fiefs
- Republic of the Sphere
- Rim Commonality
- Solaris 7
- Wolf's Dragoons
ilClan
- Capellan Confederation
- Draconis Combine
- Duchy of Andurien
- Federated Suns
- Free Worlds League
- Fronc Reaches
- Kell Hounds
- Lyran Commonwealth
- Magistracy of Canopus
- Mercenary
- Pirate
- Raven Alliance
- Solaris 7
- Tamar Pact
- Vesper Marches
- Wolf's Dragoons