Arthashastra
"पक्षाव् उरस्यं प्रतिग्रह इत्य् औशनसो व्यूह विभागः" इति ॥
“Wings, front, and reserve, is the form of an array of the army according to the school of Usanas.”
english translation
"pakSAv urasyaM pratigraha ity auzanaso vyUha vibhAgaH" iti ॥
hk transliteration by Sanscript