त्रयाणामर्धचन्द्रकः कर्कटकशृङ्गी वा ॥ कZ_१०.६.३७ ॥
trayāṇām ardhacandrakaḥ karkaṭakaśṛṅgī vā
Bagi formasi yang terdiri daripada tiga bahagian, susunan yang disyorkan ialah sama ada «Separuh Bulan» (ardhacandraka) atau «Tanduk Ketam» (karkaṭakaśṛṅgī).
Both emphasize controlled curvature/envelopment: with only three divisions, curved or pincer-like fronts help protect flanks and concentrate pressure without requiring many sub-units.