2 Chronicles 35:20

After all this, when Josiah had set the temple in order, Neco king of Egypt came up to make war at Carchemish on the Euphrates, and Josiah went out to engage him.

2 Kings 23:29-30

In his days Pharaoh Neco king of Egypt went up to the king of Assyria to the river Euphrates. And King Josiah went to meet him, and when Pharaoh Neco saw him he killed him at Megiddo.

Isaiah 10:9

“Is not Calno like Carchemish,
Or Hamath like Arpad,
Or Samaria like Damascus?

Jeremiah 46:2-12

To Egypt, concerning the army of Pharaoh Neco king of Egypt, which was by the Euphrates River at Carchemish, which Nebuchadnezzar king of Babylon defeated in the fourth year of Jehoiakim the son of Josiah, king of Judah:

Treasury of Scripture Knowledge

Summary

After all this, when Josiah had prepared the temple, Necho king of Egypt came up to fight against Carchemish by Euphrates: and Josiah went out against him.

Carchemish

Bible References

Necho

2 Kings 23:29
In his days Pharaoh Neco king of Egypt went up to the king of Assyria to the river Euphrates. And King Josiah went to meet him, and when Pharaoh Neco saw him he killed him at Megiddo.

Carchemish

Isaiah 10:9
“Is not Calno like Carchemish,
Or Hamath like Arpad,
Or Samaria like Damascus?