YOU SAID:

If fighting is sure to result in victory then you must fight

INTO JAPANESE

戦いが勝利につながると確信している場合は、戦わなければなりません

BACK INTO ENGLISH

If you are confident that the battle will lead to victory, you must fight

INTO JAPANESE

戦いが勝利につながると確信している場合は、戦わなければなりません

BACK INTO ENGLISH

If you are confident that the battle will lead to victory, you must fight