(References to Garrison)
Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)
X: -103.10 Y: 181.68[e]
 Owner History
- 2340 - Protectorate of Donegal 
- 2341 - Lyran Commonwealth 
- 2596 - Lyran Commonwealth 
- 2750 - Lyran Commonwealth 
- 2765 - Lyran Commonwealth 
- 3025 - Lyran Commonwealth
- 3030 - Lyran Commonwealth
- 3040 - Federated Commonwealth
- 3052 - Federated Commonwealth
- 3057 - Lyran Alliance
- 3062 - Lyran Alliance
- 3130 - Clan Wolf 
 Planetary History
 Third Succession War
During the reign of Archon Katrina Steiner Garrison was the target of a Draconis Combine attack. While the nature of the attacking forces isn't recorded, the attacking force is known to have consisted of some fifteen lances of 'Mechs including lances drawn from among the some of the finest DCMS units. With more important worlds under attack, Archon Steiner was forced to withdraw her defending 'Mech forces to defend higher priority targets, leaving the defense of Garrison to purely infantry forces. Despide the traditional disparity between 'Mechs and infantry in combat, the infantry forces were able to use numbers and the mobility offered by fast-moving Armored Personnel Carriers in combination with the local terrain to defeat and drive off the attacking 'Mech forces.
 Nearby Planets
- ↑ 1.0 1.1 Handbook: House Steiner, p. 13, "Protectorate of Donegal world within the Lyran Commonwealth befor  and after at their founding in "
- ↑ Historical: Reunification War, p. 159, "Inner Sphere Map "
- ↑ Era Report: 2750, p. 37, "Inner Sphere - 2750"
- ↑ Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere - 2765"
- ↑ Map of the Inner Sphere 3130
- ↑ Technical Readout: 3026, Revised Edition, p. 12, "Armored Personnel Carriers"