Which central idea should be included in a paraphrase of this excerpt?

here's the excerpt
‘Out to sea again!' My men were mutinous,
fools, on stores of wine. Sheep after sheep they
butchered by the surf, and shambling cattle,
feasting,—while fugitives went inland, running
to call to arms the main force of Cicones.
This was an army, trained to fight on horseback
or, where the ground required, on foot. They came
with dawn over that terrain like the leaves
and blades of spring. So doom appeared to us,
dark word of Zeus for us, our evil days.