Squad, n.

noun

(skwŏd), n. [Fr. escouade, escadre, Sp. escuadra, It. squadra, from Lat. ex and quadra, a square, from quatuor, four; O. Fr. esquarrer, N. Fr. équarrer, It. squadrare, to square. Cf. SQUARE.]

(Mil.) A small party of men assembled for drill, inspection, or other purposes.
Hence, any small party.