When Mayor Pete Buttigieg talks about his military service, his opponents fall silent, the media fall in love, and his political prospects soar. Veterans roll their eyes.

CNN’s Jake Tapper asked Mr. Buttigieg Sunday if President Trump “deserves some credit” for the strike that killed Iranian Maj. Gen. Qasem Soleimani. “No,” the candidate replied, “not until we know whether this was a good decision and how this decision was made.” He questioned whether “it was the right strategic move” and said his own judgment “is informed by the experience of having been on one of those planes headed into a war zone.”

But Mr. Buttigieg’s stint in the Navy isn’t as impressive as he makes it out to be. His 2019 memoir is called “Shortest Way Home,” an apt description of his military service. He entered the military through a little-used shortcut: direct commission in the reserves. The usual route to an officer’s commission includes four years at Annapolis or another military academy or months of intense training at Officer Candidate School. ROTC programs send prospective officers to far-flung summer training programs and require military drills during the academic year. Mr. Buttigieg skipped all that—no obstacle courses, no weapons training, no evaluation of his ability or willingness to lead. Paperwork, a health exam and a background check were all it took to make him a naval officer.

He writes that his reserve service “will always be one of the highlights of my life, but the price of admission was an ongoing flow of administrativia.” That’s not how it’s supposed to work. The paperwork isn’t the price of admission but the start of a long, grueling test.

Combat veterans have grumbled for decades about the direct-commission route. The politically connected and other luminaries who receive immediate commissions are disparaged as “pomeranian princes.” Former Trump chief of staff Reince Priebus became a Naval Reserve officer in 2018 at age 46. Hunter Biden, son of the former vice president, accepted a direct commission but was discharged after one month of service for failing a drug test.