Histories

But as they arrived at night and found the bridge broken, they were in great alarm lest the Ionians had abandoned them.

There was an Egyptian with Darius whose voice was the loudest in the world; Darius had this man stand on the bank of the Ister and call to Histiaeus the Milesian. This the Egyptian did; Histiaeus heard and answered the first shout, and sent all the ships to ferry the army over, and repaired the bridge.