Board Thread:Theories and Speculation/@comment-1319036-20180810162642/@comment-36006024-20180810190214

you have put a ton of logic and creativity in this, but i think the reason why Kishi went with ninjas, is because theyre combat isnt exactly the same as the combat your suggesting.

You have more of a feudal era/Medieval type of combat system, where as shinobi combat is more like the cold war era, two opposing forces going head to head in covert opps and assignments to destroy other villages, being assigned missions and such.

and then you have pockets of squads or small teams/divisions fighting each other (EX Minato's squad vs Raikage Ayy's squad, Kinkaku Force vs Team Tobirama, Mist ninja vs Shusui's squad and Sannin platoon vs Hanzo, Team Minato vs various rock ninja)

i guess you can say theres instances where large groups of shinobi fight as per When Fugaku showed itachi the 3rd ninja war battlefield, or the Shinobi Warring Era, but even that was just mercenary Ninja Clans vs other Clans, but i dont think there was ever a type of warfare with entire natons shinobi vs another Nation (maybe except when the Third Raikage died) and the 4th Shinobi world war was a whole different kind of war all together and they didnt use traditional warefare tactics.

just my thoughts, i dont think your suggestion wouldve really happend in the Narutoverse