173rd BattleMech Division

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173rd BattleMech Division
Formed unknown
Nickname The New Earth Division
Affiliation SLDF
Parent Command LIV Corps


The 173rd BattleMech Division was a part of the Star League Defense Force Regular Army.


In 2764, the unit was stationed on Victoria[1], assigned as a part of the LIV Corps, Fourth Army, to District 3 of the Federated Suns Military Region but was moved to an undisclosed area of the Periphery to take part in the Periphery Uprising by 2765.[2]. The 173th survived the war and the Hegemony Campaign, and followed General Aleksandr Kerensky on the Exodus in 2784.[2]


Rank Name Command
Commanding Officers of the 173rd BattleMech Division
Major General Renzo "RR" Rizzo 2764[3]




As an SLDF BattleMech Division the 173rd would have been composed with two Brigades of 'Mech regiments and one brigade of Mechanized Infantry regiments.[4]


  • 1731st BattleMech Brigade [5]
  • Battle Regiment
  • Striker Regiment
  • Striker Regiment
  • 1732nd BattleMech Brigade
  • Battle Regiment
  • Striker Regiment
  • Striker Regiment
  • 1733rd Infantry Brigade
  • Air-Mobile Regiment
  • Air-Mobile Regiment
  • Mechanized Infantry


  1. Field Manual: SLDF, p. 252, "SLDF - Federated Suns Military Command Map"
  2. 2.0 2.1 The Star League, p. 152, "Fourth"
  3. Field Manual: SLDF, p. 71, "173rd BattleMech Division"
  4. The Star League, p. 133
  5. Field Manual: SLDF, p. 71