Themes
Now the general who wins a battle makes many calculations in his temple ere the battle is fought. The general who loses a battle makes but few calculations beforehand.
— Sun Tzu · The Art of War

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The two generals are distinguished by how much calculation they do before battle. Victory is paired with extensive preparation, defeat with too little. The repeated structure makes advance thought the central contrast, directing attention to what happens before fighting rather than only during it.
Context reviewed