Investigation (1)

Although the referee announced Auron as the winner, it didn't mean Auron would directly get promoted. It was because Auron's opponent surrendered the match.

In a promotion match, if the one who was being challenged surrendered, an investigation would be started. It was to check whether they surrendered because of bribery or other things that would bring them other benefits.

The military gave very high attention to the promotion matters. It was because when someone was promoted, they would have more benefits and power. The military didn't want to promote the wrong people.

As a matter of fact, Auron's opponent surrendering the match would make him and Auron underwent a separate investigation to prove that this match was not a setup.