Why War is Essential

Karna to Krishna

'I pray to thee, O bull of the Kshatriya race, let not the Kshatriyas, old in learning and old in years, perish miserably,

O Janardana, for thy sake. Oh, let this swelling host of Kshatriyas perish by means of weapons on that most sacred of all spots in the three worlds, viz. Kurukshetra,

O Kesava. O thou of eyes like lotus-leaves, accomplish on this spot what thou hast in thy mind, so that, O thou of Vrishni's race, the whole Kshatriya order may attain to heaven.

As long, O Janardana, as the hills and the rivers will last, so long will the fame of these achievements last. The Brahmanas will recite this great war of the Bharatas. The fame, O thou of Vrishni's race, that they achieve in battles is the wealth that Kshatriyas own.

O Kesava, bring Kunti's son (Arjuna) before me for battle, keeping for ever this our discourse a secret, O chastiser of foes.'

https://www.google.com/search?q=O+Janardana+as+the+hills+and+the+rivers+will+last

Duryodana  to Krishna

We shall not in consequence of any fierce deed, or (alarming) word (of theirs), bow down to Pandavas in fear, deprived of our senses. We cannot bow down to Indra himself, let alone the sons of Pandu. I do not, 

O Krishna, see the man, observant of Kshatriya virtues, who can, O slayer of foes, venture to conquer us in battle. Let alone the Pandavas, 

O slayer of Madhu, the very gods are not competent to vanquish Bhishma, Kripa, Drona and Karna, in battle. 

If, O Madhava, we are, in the observance of the practices of our order, cut off with weapons in battle, when our end comes, even that will lead us to heaven. 

Even this, O Janardana, is our highest duty as Kshatriyas, viz., that we should lay ourselves down on the field of battle on a bed of arrows. If, without bowing to our enemies, ours be the bed of arrows in battle, that, 

O Madhava, will never grieve us. Who is there, born in a noble race and conforming to Kshatriya practices, that would from fear bow to an enemy, desirous only of saving his life? Those Kshatriyas that desire their own good, accept regardfully this saying of Matanga, viz., that (as regards a Kshatriya), one should always keep himself erect, and never bow down, for exertion alone is manliness; one should rather break at the knots than bend. A person like me should only bow down to the Brahmanas for the sake of piety, without regarding anybody else. (As regards persons other than Brahmanas), one should, as long as one lives, act according to Matanga's saying. Even this is the duty of Kshatriyas; even this is ever my opinion. That share in the kingdom which was formerly given them by my father shall never again, 

O Kesava, be obtainable by them as long as I live. As long, 

O Janardana, as king Dhritarashtra liveth, both ourselves and they, sheathing our weapons, 

O Madhava, should live in dependence on him. Given away formerly from ignorance or fear, when I was a child and dependent on others, the kingdom, 

O Janardana, incapable of being given away again, shall not, 

O delighter of Vrishni's race, be obtainable by the Pandavas. 

At present, O Kesava of mighty arms, as long as I live, even that much of our land which may be covered by the point of a sharp needle shall not, O Madhava, be given by us unto the Pandavas.'"

https://www.google.com/search?q=point+of+a+sharp+needle+shall+not+O+Madhava

Arms Sacrifice

Karna to Krishna :

O Janardana, like an ocean,--great is this assemblage, O Krishna, of Kshatriyas (that hath been made by Yudhishthira). This blazing kingdom, celebrated among all the kings of the earth, is already won (by Yudhishthira). O thou of Vrishni's race, a great sacrifice of arms is about to be celebrated by Dhritarashtra's son. 

1. Thou, O Janardana, wilt be the Upadrashtri of that sacrifice. The office of Adhyaryu also, O Krishna, in that sacrifice, will be thine. 
2. The ape-bannered Vibhatsu accoutred in mail will be the Hotri (his bow), Gandiva will be the sacrificial ladle, and the prowess of the warriors will be the clarified butter (that is to be consumed). The weapons called Aindra, Pasupata, Brahma, and Sthunakarna, applied by Arjuna, will, O Madhava, be the mantras (of that sacrifice). 
3. Resembling his father, or perhaps, excelling him in prowess, Subhadra's son (Abhimanyu) will be the chief Vedic hymn to be chanted. 
4. That destroyer of elephant ranks that utterer of fierce roars in battle, that tiger among men, the exceedingly mighty Bhima, will be Udgatri and Prastotri in this sacrifice. 
5. King Yudhishthira of virtuous Soul, ever engaged in Yapa and Homa, will himself be the Brahma of that sacrifice. The sounds of conchs, tabors, and drums, and the leonine roaring rising high in the welkin, will be the calls upon the invited to eat. 
6. The two sons of Madri, Nakula and Sahadeva, of great fame and prowess, will be the slayers of the sacrificial animals; rows of bright cars furnished with standards of variegated hue, will, O Govinda, be stakes (for tying the animals), 
7. O Janardana, in this sacrifice. Barbed arrows and Nalikas, and long shafts, and arrows with heads like calf's tooth, will play the part of spoons (wherewith to distribute the Soma juice) 
8. while Tomaras will be the vessels of Soma, and bows will be pavitras. 
9. The swords will be Kapalas, the heads (of slain warriors) 
10. the Purodasas and the blood of warriors the clarified butter. O Krishna, in this sacrifice. 
11. The lances and bright maces (of the warriors) will be pokers (for stirring the sacrificial fire) and the corner stakes (for keeping the fire-wood from falling down). 
12. The disciples of Drona and Kripa, the son of Saradwat, will be the Sadasyas (assisting priests). 
13. The arrows shot by the wielder of Gandiva and by (other) mighty car-warriors, and by Drona and Drona's son, will play the part of ladles for distributing the Soma. 
14. Satyaki will discharge the duties of the chief assistant of the Adhyaryu. 
15. Of this sacrifice, Dhritarashtra's son will be installed as the performer, while this vast army will be his wife. 
16. O thou of mighty arms, when the nocturnal rites of sacrifice will begin, the mighty Ghatotkacha will play the part of the slayer of (devoted) victims. 
17. The mighty Dhrishtadyumna, who sprang into life from thesacrificial fire, having for its mouth the rites celebrated with mantras, will, O Krishna, be the Dakshina of that sacrifice.
18.  For those harsh words, O Krishna, that I said before unto the sons of Pandu for the gratification of Dhritarashtra's son,--for that wicked conduct of mine,--I am consumed with repentance. When O Krishna, thou wilt behold me slain by Arjuna, then will the Punachiti of this sacrifice commence. 
19. When the (second) son of Pandu will drink the blood of the loudly roaring Dussasana, then will the Soma-drinking of this sacrifice have taken place! 
20. When the two princes of Panchala (Dhrishtadyumna and Sikhandin) will overthrow Drona and Bhishma, then, O Janardana, will this sacrifice be suspended for an interval. 
21. When mighty Bhimasena will slay Duryodhana, then, O Madhava, will this sacrifice of Dhritarashtra's son be concluded. 
22. When the wives of Dhritarashtra's sons and grandsons assembled together, deprived, O Kesava, of their husbands and sons and without protectors, will indulge in lamentations with Gandhari in their midst, on the field of battle haunted by dogs and vultures and other carnivorous birds, then, O Janardana, will the final bath of this sacrifice take place.

https://www.google.com/search?q=O+Janardana+like+an+ocean+great+is+this+assemblage

isha

 https://isha.sadhguru.org/in/en/s?sq=Karna

Birth Casket of Karna Flowed

Evidence of Pachnada The Pachnada is an area, near Bhareh in Uttar Pradesh state, at the border of Bhind and Etawah districts, where the tourists can witness the confluence of five rivers, Kunwari, Pahuj,(Pushpawati (ancient time known as ASHWANADI) holy river Ganaga) Jamuna), Chambal and Sindh.

Pahuj (Pushpawati (ancient time known as ASHWANADI) holy river Ganaga) River is a river flowing in Bhind District of Madhya Pradesh in central India. It is tributary of Sindh River, which joins Yamuna River in Etawah Uttar Pradesh state, just after the Chambal River confluences into Yamuna river.

Kwari River (also spelled as Kuwari or Kunwari River) is river flowing in Morena, Bhind districts of Madhya Pradesh in central India. It is tributary of Sindh River and joins it in Etawah District, Sindh river in turn immediately joins Yamuna river.

The Sindh or Kali Sindh is a river of Madhya Pradesh state in central India. The Sindh originates on the Malwa Plateau in Vidisha District, and flows southwest through Madhya Pradesh to join the Yamuna River in Etawah Uttar Pradesh state, just after the Chambal River confluences into Yamuna river. The Pahuj River and Kwari River are its tributaries.

The confluence of Yamuna and Chambal up to the confluence of Sindh and Yamuna locally known as Pachnada, presents an extensive view of Sylvan beauty during the rainy season and also in the winters, but it turns into an arid expanse during the summers.

Mythology:The epic Sanskrit narrative the Mahabharata, refers to the Chambal river as the Charmanyavati

http://wikimapia.org/10021378/Pachnada-Confluence-of-five-rivers

https://www.sacred-texts.com/hin/db/bk02ch06.htm