What are the poetic elements in "The Midnight Ride of Paul Revere"?

Longfellow's "The Mignight Ride of Paul Revere" is laden
with many literary elements.

First and foremost, we can see
that  begins by Longfellow using rhyming couplets in the first stanza. The second stanza
he switches his rhyme scheme to ababaabbb. The third stanza reverts back to rhyming
couplets, the fourth to abbcabc, etc. It is important to realize that he uses rhyming
and that his format switch is purposefully done, as it follows along with the complexity
of Paul Revere's physical ride.

Longfellow also uses
synecdoche: "For the country folk to be up and to arm," to metaphorically describe how
the people will react to the news of the English heading toward the American soldiers.
Simile is used to describe the passing of time: "as the moon rose over the bay". To
emphasize the mystery, Longfellow also utilizes alliteration: "Wanders and watches with
eager ears."