Various kinds of machines and their actions have been described there. Devastation of the enemy's territories, attacks upon enemies, the destruction and removal of boundary lines and other indications, the cutting down of large trees, siege of forts, supervision of agriculture and other useful operations, and the hoarding of necessaries, dresses and the best means of manufacturing them, were all described.
यन्त्राणि विविधान्येव क्रियास्तेषां च वर्णिताः। अवमर्दः प्रतीघात: केतनानां च भञ्जनम्॥ चैत्यगुमावमर्दश्च रोधः कर्मानुशासनम्। अपस्करोऽथ वसनं तथोपायाश्च वर्णिताः॥