So amongst the kṣatriyas when there is fighting, unless one party is killed, the fighting cannot be stopped. This is the Battle of Kurukṣetra, to see the history of the former kings and kṣatriyas, how they were determined. This is one of the qualifications of kṣatriya: not to go away from the fighting. When there is challenge of fighting, immediately a kṣatriya would accept. That is kṣatriya spirit. Īśvara-bhāvaṁ ca, and ruling over others. And charitable. These are the symptoms of kṣatriya.
They are described in the Bhagavad-gītā, brāhmaṇa qualification, kṣatriya qualification, vaiśya qualification, śūdra qualification. So... Very nice arrangement, Vedic civilization. Everyone is guided by the superior. The brāhmaṇa guides the kṣatriyas, the kṣatriya guides the vaiśyas, and the vaiśya employs the śūdras. Cātur-varṇyaṁ mayā sṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13). In this way, four divisions of brāhmaṇa, kṣatriya, vaiśya, they manage the whole society so nicely. The kṣatriyas, as the kṣatriya's business was to give protection to the citizens, similarly, vaiśya's duty was to give protection to the animals. Kṛṣi-go-rakṣya-vāṇijyaṁ vaiśya-karma svabhāva-jam (BG 18.44).