It's called a nothing-burger,
@Mikado463 . I know you're smarter than that.
Hell, his old Guard mates corroborate Walz retiring before they got orders to ship out and supported his choice to run for congress... a race which he won and why he retired. As has already been stated, he earned the promotion yet didn't finish the associated training.
Currently, the right is running for any little rock they can throw in hopes of derailing the revival of the Democratic campaign. Thus far I haven't seen anything promising from the Dumpster Fire that is the Republican campaign.