- The Klingon-Cardassian War begins after the Klingon Defence Force invades Cardassian territory.
- The Klingons attack Deep Space 9 to capture the Cardassian Detapa Council who sought refuge on the station. The Klingons eventually opt to retreat after Starfleet reinforcements come to the station's aid.
- Rex Callan joins Brendan Patol's Maquis cell.
- The Federation-Klingon War of 2372-73 begins when the Klingon Empire attacks the Archanis sector.
Assignments and promotions
|2371|| 24th century|
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