וְנָסַ֗ע דֶּ֛גֶל מַחֲנֵ֥ה בְנֵֽי־אֶפְרַ֖יִם לְצִבְאֹתָ֑ם וְעַל־צְבָא֔וֹ אֱלִישָׁמָ֖ע בֶּן־עַמִּיהֽוּד׃
And the standard of the camp of the children of Ephraim set forward according to their hosts; and over his host was Elishama the son of Ammihud.
Read halakhic rulings (Jewish law) on Numbers 10:22: and classical halakhic sources.