The elaborately disciplined army of Egypt was one of the marvels of the world at that time.

.................We can only imagine the terror that must have struck the Israelites when they realized that it was coming after them.
................................Exodus 14:9-10
" But the Egyptians pursued after them, all the horses and chariots of Pharaoh, and his horsemen, and his army, and overtook them encamping by the sea, beside Pihahiroth, before Baalzephon.
And when Pharaoh drew nigh, the children of Israel lifted up their eyes, and, behold, the Egyptians marched after them; and they were sore afraid: and the children of Israel cried out unto the LORD."