summarize passage

Read the excerpt below from the play Antigone by Sophocles and complete the instruction that follows.

CHORUS LEADER:
Against our land he marched,
sent here by the warring claims
of Polyneices, with piercing screams,
an eagle flying above our land,
covered wings as white as snow,
and hordes of warriors in arms,
helmets topped with horsehair crests.

Summarize this passage.