The UNSC Pillar of Autumn saw extensive
refits for its part in Operation: RED FLAG,
which was ultimately cancelled in 2552.
However, the ship became legendary for its
actions at the Fall of Reach and during the
Battle of Installation 04 immediately after.
Its success during these operations showed
that Halcyon-class light cruisers like it were
not as obsolete as the UNSC once thought.
As such, SinoViet Heavy Machinery was
comissioned to create a new line of vessel
with the Autumn's upgrades as standard.
Led by the UNSC Pillar of Autumn II, these
new Autumn-class heavy cruisers now form
the of the Navy in the