John Gill Commentary Numbers 2:22

"And the tribe of Benjamin: and the prince of the children of Benjamin shall be Abidan the son of Gideoni." — Numbers 2:22 (ASV)

Then the tribe of Benjamin
He was to pitch under the same standard of Ephraim, and the other side of it from that of Manasseh; the one being before, and the other behind, and the standard in the middle; (See Gill on Numbers 2:7);

and the captains of the sons of Benjamin [shall be] Abidan the son of
Gideoni ;
of whom see (Numbers 1:11) (7:60) .