USS Enterprise-D

The USS Enterprise-D
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The USS Enterprise (NCC -1701-D) was a 24^th century Federation Galaxy-class starship operated by Starfleet, and the fifth Federation ship to bear the name Enterprise. The Enterprise-D served from 2364 to 2371 under the command of Captain Jean-Luc Picard. During her career, the Enterprise served as the Federation flagship. The Enterprise was destroyed during the Battle of Veridian III in 2371. (Star Trek: The Next Generation; Star Trek Generations)

(Source: Memory Alpha)

In December of 2363 and January of 2364, Lieutenant (senior grade) Marcus Alexander Slayton was assigned to the Enterprise-D as acting tactical officer prior to the arrival of the Enterprise’s official command officers.