Jamieson, Fausset and Brown on Daniel 11:26

26. they that feed of ... his meat--those from whom he might naturally have looked for help, his intimates and dependents (Psa 41:9; Joh 13:18); his ministers and guardians.

his army shall overflow--Philometer's army shall be dissipated as water. The phrase is used of overflowing numbers, usually in a victorious sense, but here in the sense of defeat, the very numbers which ordinarily ensure victory, hastening the defeat through mismanagement.

many shall fall down slain--(1 Maccabees 1:18, "many fell wounded to death"). Antiochus, when he might have slain all in the battle near Pelusium, rode around and ordered the enemy to be taken alive, the fruit of which policy was, he soon gained Pelusium and all Egypt [Diodorus Siculus, 26.77].