The USN does have a bad habit of giving a lot of deference to upper ranks and a definite reluctance to punish senior commanders or discourage bad behavior; often leading to poor officers getting high command and then being fired when they fuck up. Part of this is due to the way the Navy's advancement system works, it's entirely performance based. So all the Navy sees is an officer who does well on their FITREPs, does well on inspections and examinations, and appears (on paper) to be a good officer.4. Many of Gehres' actions AFTER the attack are, obviously, highly problematic and even in some cases downright disgraceful. But while I do not know if Gehres benefited from particular connections or favors, I would like to observe that I would not be the first person to observe that US naval leadership seemed to have a pattern throughout the war, as it had indeed for generations before, of giving undue deference to the senior ranks of its officer corps. It is fairly astounding that Captain Charles B. McVay was the only USN CO in the entirety of World War II to be court martialed for the loss of his ship, especially in light of the fact that Admiral Ernest King just happened to have a grudge against McVay's father. Nor do you need only look at other striking oddities like Carleton Wright getting a Navy Cross and a nice shore command after suffering the second worst defeat in US Navy history to find . . . curious patterns of how senior Navy officers got treated.
Would we call such a pattern a case of corruption? I think we need to unpack what we mean by that term in this context.
But, with specific regard to combat, the Navy does not like to court martial officers for things that happen during battle because of a fear that if the Navy begins doing so, commanding officers will be less focused on the outcome of combat than on how they will be perceived afterwards. A good modern example is the Fitzgerald and MV Crystal collision of eight years ago. The Navy brought criminal charges against the command triad (CO, XO, Command Master Chief) and let me tell you, that sent a bolt of fear through the Navy, because a lot of people became concerned that their screwups were going to be judged not by the merits of a Court of Inquiry or a Board of Investigation, but by a criminal court. A courts martial is less focused on "what went wrong and how do we prevent that in the future" and more on "why are these person guilty of a crime and why should they be punished."