Killing on the battle on the religious principle and the killing of animals in the sacrificial fire are not at all considered to be acts of violence, because everyone is benefitted by the religious principles involved. BG 1972 purports

Expressions researched:
"killing on the battlefield on religious principles and killing animals in the sacrificial fire are not at all considered to be acts of violence, because everyone is benefited by the religious principles involved"

BG Chapters 1 - 6

Killing on the battlefield on religious principles and killing animals in the sacrificial fire are not at all considered to be acts of violence, because everyone is benefited by the religious principles involved. The animal sacrificed gets a human life immediately without undergoing the gradual evolutionary process from one form to another, and the kṣatriyas killed on the battlefield also attain the heavenly planets as do the brāhmaṇas who attain them by offering sacrifice.

BG 2.31, Purport:

The kṣatriyas are specially trained for challenging and killing because religious violence is sometimes a necessary factor. Therefore, kṣatriyas are never meant for accepting directly the order of sannyāsa, or renunciation. Nonviolence in politics may be a diplomacy, but it is never a factor or principle. In the religious law books it is stated:

āhaveṣu mitho 'nyonyaṁ

jighāṁsanto mahī-kṣitaḥ

yuddhamānāḥ paraṁ śaktyā

svargaṁ yānty aparāṅ-mukhāḥ

yajñeṣu paśavo brahman

hanyante satataṁ dvijaiḥ

saṁskṛtāḥ kila mantraiś ca

te 'pi svargam avāpnuvan

"In the battlefield, a king or kṣatriya, while fighting another king envious of him, is eligible for achieving heavenly planets after death, as the brāhmaṇas also attain the heavenly planets by sacrificing animals in the sacrificial fire." Therefore, killing on the battlefield on religious principles and killing animals in the sacrificial fire are not at all considered to be acts of violence, because everyone is benefited by the religious principles involved. The animal sacrificed gets a human life immediately without undergoing the gradual evolutionary process from one form to another, and the kṣatriyas killed on the battlefield also attain the heavenly planets as do the brāhmaṇas who attain them by offering sacrifice.

There are two kinds of sva-dharmas, specific duties. As long as one is not liberated, one has to perform the duties of his particular body in accordance with religious principles in order to achieve liberation. When one is liberated, one's sva-dharma—specific duty—becomes spiritual and is not in the material bodily concept. In the bodily conception of life there are specific duties for the brāhmaṇas and kṣatriyas respectively, and such duties are unavoidable. Sva-dharma is ordained by the Lord, and this will be clarified in the Fourth Chapter. On the bodily plane sva-dharma is called varṇāśrama-dharma, or man's steppingstone for spiritual understanding. Human civilization begins from the stage of varṇāśrama-dharma, or specific duties in terms of the specific modes of nature of the body obtained. Discharging one's specific duty in any field of action in accordance with the orders of higher authorities serves to elevate one to a higher status of life.