UNSC Lusitania (CVN-0675)

The UNSC Lusitania (CVN-0675) was a Thermoployae class supercarrier, serving as the flagship of Task Force H. She was the sistership of the mainline Thermopylae, but was subsequently launched first in 2506, serving in the Human-Covenant War. Built as an experimental prototype, she was the test bed for the alternativ design for the Thermopylae class, barring wholly different technologies and characteristics which would be later streamlined and armed into the UNSC carrier design, and by extension UNSC Infinity. 
The ship’s motto was ‘Legio, Aeterna, Aeterna, Vixtrix!’ (Legion, Eternal, Eternal, Victory!)
UNSC Lusitania was the lead ship of Task Force H, a UNSC armada consisting of the largest concentration of capital ships during the entire Human-Covenant War. She was destroyed during Operation Falling Sky by the Covenant DOR Class 'Order of Retribution'.