Kautilya's Arthashastra 7.6.40

7.6.40

prakāśayuddhaṃ nirdiṣṭe deśe kāle ca vikramaḥ //
vibhīṣaṇam avaskandaḥ pramādavyasanārdanam //

When battle is fought in daylight and in some locality, it is termed an open battle; threatening in one direction, assault in another, destruction of an enemy captured while he was careless or in troubles;