what is this battle?
It unfolded in three stages: an initial skirmish at Red Cliffs followed by a retreat to the Wulinbattlefields on the northwestern bank of the Yangtze, a decisive naval engagement, and Cao Cao's disastrous retreat along Huarong Road.
Battle of Red Cliffs
The Battle of Red Cliffs unfolded in three stages: an initial skirmish at Red Cliffs followed by a retreat to the Wulin (烏林) battlefields on the northwestern bank of the Yangtze, a decisive naval engagement, and Cao Cao's disastrous retreat along Huarong Road.

where did the battle of red cliffs take place The precise location of the Red Cliffs battlefield has long been the subject of both popular and academic debates, but has never been conclusively established.
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Battle of Red Cliffs [SEP] Battle
Cao Cao had chained his ships from stem to stern, possibly aiming to reduce seasickness in his navy, which was composed mostly of northerners who were not used to living on ships. Observing this, divisional commander Huang Gai sent Cao Cao a letter feigning surrender and prepared a squadron of capital ships described as "mengchong doujian" (蒙衝鬥艦). The ships had been converted into fire ships by filling them with bundles of kindling, dry reeds, and fatty oil. As Huang Gai's "defecting" squadron approached the midpoint of the river, the sailors applied fire to the ships before taking to small boats.