"Of course, I blame President Biden for the disastrous retrograde operation still unfolding. But let us not allow that to deflect us from heaping even more blame on military leaders."

"They stonewalled President Trump rather than beginning deliberate preparations to exit the country when he told them to. They thought that they could outlast him and then talk sense to his successor. Then after the inauguration, they pressed the new president to reverse course. He wisely chose withdrawal. Then and only then did the generals begin their preparations in earnest. But it was too late to do it well.... General Milley must resign. Not only is he the Chairman of the Joint Staff, prior to that he was the Chief of Staff of the Army. While all services share the blame, the Army is the land domain proponent. The 20 years of failure in Afghanistan is an Army failure.... The capital fell in less than 90 hours. Failure must be punished. And punishment in a bureaucracy means mass firings and a smaller budget—not more money so that they might be better the next time. Congress must consolidate and collapse our intelligence agencies. And when its reorganization is done, if the overall size of the nation’s intelligence apparatus is a quarter of what it is now, that still is too large.... [T]he generals, the intelligence analysts, the defense contractors, and the pundits all leveraged America’s rarest resource: the American serviceman and woman... Even after its failure was apparent to their leaders, they continued to enlist and reenlist, largely because their superiors—the experts—assured them that success was possible. It was not. It never was."

 
That's part of a message from "a senior military officer" published at Instapundit.