Read Numbers 2:18 Using Other Translations
On the west side shall be the standard of the camp of Ephraim according to their armies: and the captain of the sons of Ephraim shall be Elishama the son of Ammihud.
"On the west side shall be the standard of the camp of Ephraim by their companies, the chief of the people of Ephraim being Elishama the son of Ammihud,
“The divisions of Ephraim, Manasseh, and Benjamin are to camp on the west side of the Tabernacle, beneath their family banners. These are the names of the tribes, their leaders, and the numbers of their registered troops: Tribe Leader Number Ephraim Elishama son of Ammihud 40,500