Find all references to year 2581 - One link per entry (See Years Policy)
- March: The SLDF conquers Fanardir.
- July 26th-28th: The SLDF conquers Bryceland.
- July-August: The SLDF conquers Groveld III.
- August 4th: The SLDF conquers Schirmeck.
- August 11th-September 2nd: Seventeenth Galedon Regulars conquers Tabayama but faces two years of resistance that only ends after mass executions of civilians.
- August-November: The SLDF conquers Weisau.
- September-October: The SLDF conquers Borgan's Rift.
- October: The SLDF takes heavy losses at the hands of Outworlds Alliance forces and the Pitcairn Legion while conquering Sevon.
- October-November: The SLDF invades Medron and in the face of heavy resistance conquers the planet by executing one in ten of the population at the orders of General Amos Forlough.
- June 5th: the Tancredi Accord is signed on New Avalon.
- July 6th: Operation UNION HOLD, the Star League invasion of the outworlds Alliance, begins.
- November 28th: Star League General Amos Forlough orders the first mass-scale execution of Outworlds Alliance civilians to quell resistance on occupied worlds, beginning with Medron.
- Operation MAILED FIST, aka the Rim Worlds Campaign begins.
- The 3rd Fusiliers of Oriente are formed during the Reunification War.
- Earthwerks Incorporated purchases Toddlette Industries.
- Leopard CV DropShip introduced.
- The STG-3G variant of the Stinger BattleMech is introduced.
- Krupp Stellar Technologies Inc. is contracted to design the Lancelot BattleMech.