Metaphor!
It’s not a simile because LIKE or AS is not being used but things are being compared.
Answer:
Is means he's dream and what he did. He's explaining what he did and talked about Napoleon.
Explanation:
alliteration: "Come to my arms, my beamish boy! O frabjous day, Callooh, Callay!"
assonance: "He took his vorpal sword in hand; Long time the manxome foe he sought-"
consonance: "Beware the Jabberwock, my son! The jaws that bite, the claws that catch!"
repetition: "One, two! One, two! And through and through! The vorpal blade went snicker-snack!"
internal rhyme: "He left it dead, and with it's head He went galumphing back"