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This article is about the BattleMech. For the military rank, see Legionnaire (rank).

Production information
Manufacturer Achernar BattleMechs[1]

Corean Enterprises[1]

Production Year 3073[2]
Model LGN-2D
Class Medium
Cost 10,426,000 C-bills
Technical specifications
'Mech type Inner Sphere BattleMech
Mass 50 tons
Chassis 2A Type 15 endo steel
Armor StarGuard II
Engine Magna 350 XL
Communications System PCE-4X "Blaster"
Targeting Tracking System Reginald Systems TC-A
Heat Sinks 10 double
Speed 118 km/h

1x Rotary AC/5

BV (1.0) 1,184[3]
BV (2.0) 1,386[1][4]


The Legionnaire was developed as the Federated Suns answer to the Lyran Blitzkrieg, and entered production during the Word of Blake Jihad. A lance of Legionnaires played an important role in the Third Battle of New Avalon, where they quickly assaulted the Blakist force's left flank as they were attempting to ford the Thames river, breaking their momentum and eventually forcing them off world. Capable of reaching 118 km/h, the Legionnaire is a fast flanker. The Legionnaire was one of the last new designs to be mass produced by the Achernar BattleMech factory.

Weapons and Equipment[edit]

The Legionnaire is built on an endo steel chassis, which is protected by nine and a half tons of armor. Its massive Magna 350 XL extralight engine allows the 'Mech to reach its max speed of 118 km/h, and allows it to flank slower forces with ease.[1]

The Legionnaire is built around a single Mydron Model RC RAC/5 with three tons of ammunition, slaved to a sophisticated targeting computer, giving it extreme accuracy in battle.[1]


  • LGN-1X 
    This was the original prototype created in 3068, which was designed to be a scout 'Mech. It was armed with a RAC/2, two ER medium lasers, had a Beagle active probe, and an additional half-ton of armor. The LGN-2X prototype was chosen for production instead. BV (2.0) = 1,322[5][6]
  • LGN-2F 
    Based on the LGN-2X1 MUSE FIRE design, this variant uses a torso-mounted cockpit to protect the pilot. The targeting computer has been removed and a pair of arm-mounted ER medium lasers joins the standard RAC/5. Nearly ten tons of reflective armor provides additional protection from energy weapons, but leaves the 'Mech slightly more vulnerable to ballistic and missile attacks. BV (2.0) = 1,808[7]
  • LGN-2K 
    This 3128 variant demanded by Prefect Katana Tormark swaps out the RAC/5 for an ER PPC, turning the Legionnaire into a potent sniper. The weight saved enables the addition of enough jump jets for the 'Mech to leap up to 210 meters at a time and more armor. It also carries a targeting computer and MASC system to reach a top speed of nearly 150 km/h. BV (1.0) = 1,341[8] BV (2.0) = 1,597[9]
  • LGN-2XA 
    This variant removes all the standard weaponry and mounts an Arrow IV launcher in the right arm and torso. BV (2.0) = 1,172[10][11]

Custom Variants[edit]

    A project to create an upgrade package for the Legionnaire, developed under the supervision of Sandra Hall-Pujanauski, this version carries an ER medium laser in each arm. The standard armor was replaced by Clan made reflective armor, and a Clan built RAC/5 was crammed into the right torso. To provide room for the pilot, the MUSE FIRE uses a torso-mounted cockpit, and the room freed in the 'Mech's head is used to store three tons of ammunition. This version doesn't carry the targeting computer of the standard version. BV (2.0) = 2,032[14]

Design Quirks[edit]

The Legionnaire is subject the following Design Quirks:[16]

The LGN-2F Legionnaire variant is subject to the following Design Quirks:[7]

Related BattleMechs[edit]

  • Centurion - Unsuccessful in increasing the mass of the Centurion BattleMech, Corean Enterprises reworked their prototype skeletons rather than scrap the project. Ultimately, the design team produced the Legionnaire BattleMech.[1]
  • Blitzkrieg - The role of the Legionnaire was inspired by the performance of the Blitzkrieg BattleMech during the Federated Commonwealth Civil War. Both designs are built to be a fast flanking unit mounting a single, powerful weapon system.[1]

Notable Pilots[edit]

See: Category:Notable Legionnaire Pilots



  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Technical Readout: 3075, p. 76-77
  2. MUL online date for Legionnaire
  3. Record Sheets: MechWarrior Dark Age I, p. 57
  4. Record Sheets: 3075 Unabridged - The Cutting Edge, p. 146
  5. Record Sheets: 3075 Unabridged, p. 56
  6. Record Sheets: 3075 Unabridged - The Cutting Edge, p. 145
  7. 7.0 7.1 Technical Readout: Prototypes, p. 111
  8. Record Sheets: MechWarrior Dark Age I, p. 58
  9. Record Sheets: 3145 New Tech, New Upgrades, p. 120
  10. Record Sheets: 3075 Unabridged, p. 57
  11. Record Sheets: 3075 Unabridged - The Cutting Edge, p. 147
  12. Record Sheets: 3075 Unabridged, p. 58
  13. Record Sheets: 3075 Unabridged - The Cutting Edge, p. 148
  14. Experimental Technical Readout: Davion, p. 3
  15. Record Sheets: MechWarrior Dark Age I, p. 59
  16. BattleTech Manual, p. 92, "BattleMech Quirk Table - Legionnaire"