so you done a bit more digging and realised your first line was wrong as he was only provisionally given it provided he passed the criteria which he never didThe US Army's official newspaper says he was a command sergeant major btw. I'm going to trust them to get that stuff right.
Walz credits National Guard service with sharpening leadership skills he hopes to use as vice president
Minnesota Gov. Tim Walz has long credited his Army National Guard service with developing his leadership capabilities, skills he hopes to take to the White House as Vice President Kamala Harris’ running mate.www.stripes.com
Apparently he reverted to a lower rank at retirement as he hadn't been in grade long enough to cover all the promotion paperwork and qualifications. Typical army *******s.