Many factors determined the outcome of a battle.
The same was true for the factors that determined the outcome of a war.
A battle was a slaughter between a small number of people.
A war, meanwhile, was a slaughter between many.
However, whether it was a battle or a war, the most fundamental rules of victory and defeat never changed, nor did the most basic tactical arrangements. Over hundreds, thousands, and tens of thousands of years, the experience, scars, and lives of those who came before had yielded only one conclusion—unless one possessed overwhelming strength and could win without losses, battle and war would always be a game of exchanging pieces!
The overall structure resembled chess.
Use the fewest losses possible to inflict as much damage on the opponent as possible.
Likewise, use the fewest losses possible to resist the opponent's attacks as much as possible.
That was the most effective tactic.
There was no second best.
Therefore, in battle, the way for the weak to defeat the strong was through attrition—wear down the opponent's condition as much as possible. Even Supreme Realm, Earth Supreme, Heavenly Sovereign, and even the never-before-seen rulers did not possess conditions that remained forever unchanged. The reason their condition did not seem to fluctuate was simply that their reserves were too deep. If a sink full of water had a basin scooped out of it, the water level would visibly drop. But if it were a boundless sea, scooping out two, three, or four basins of water would not change the water level at all. Thus, the condition of the strong seemed not to fluctuate only because they had not been drained enough; perhaps the expenditure did not even exceed their recovery rate, making it seem as if spending strength and not spending strength were