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A Commonplace Book

Interpretive essays on quotes worth keeping — a commonplace book, read and re-read.

Work, Leadership & Innovation

Mattis on Politeness and Lethality

Be polite, be professional, but have a plan to kill everybody you meet.

— General James Mattis, guidance to the 1st Marine Division before its return to Iraq (winter 2003–04)

Analytical Interpretation

Background and Context

In the winter of 2003–04 the 1st Marine Division was home from the invasion of Iraq and getting ready to go back, this time to hold Anbar Province in the west. Mattis wanted his Marines to work differently from the Army units they were replacing: less heavy-handed with ordinary Iraqis, and quicker to separate the few who meant harm from the many who didn't. He gave them a short set of rules to live by, and this was one of them. It was written for young Marines at checkpoints, on foot patrols, and in crowded markets, where nearly everyone they met would be harmless and anyone might not be.

Interpretation

Politeness and professionalism are about how a Marine comes across. The plan is about what he carries in his head.

The word doing the work there is plan. Mattis could have said be ready to kill or trust nobody, and either would have made suspicion the Marine's job. A plan is something else. It's a set of practical questions: where are this man's hands, where is cover, what do I do if the car doesn't stop. Answering them keeps the mind busy with the situation rather than with the fear, and a Marine who already knows what he'd do has less reason to do something rash.

Then everybody. The rule makes no exceptions, so it also asks the Marine to make no judgments about who looks dangerous — the call most likely to be wrong, and most likely to insult the person on the receiving end. The courtesy and the plan both go to everyone, and nobody is singled out for either.

Current Relevance

American policing has spent the last decade arguing over whether officers should think of themselves as warriors or guardians — a federal task force on policing came down on the guardian side in 2015. Mattis's rule doesn't pick a side in it. What it offers instead is a method: the courtesy goes to the person in front of you, and the vigilance goes into a plan rather than a mood.

The same split turns up anywhere ordinary service carries a small, real chance of violence: emergency rooms, social workers making home visits, night-shift security. The people who do that work well tend to be warm with everyone and to have thought ahead about the one in a hundred. The rule says out loud what that looks like.

Impact and Legacy

The line reached a wide audience through Thomas Ricks's Fiasco in 2006. It has since become one of the handful of sentences that define Mattis's public image, alongside the 1st Marine Division's motto, "No better friend, no worse enemy," which makes the same pairing in six words. It sums up in one sentence how the division meant to behave in Anbar: courteous as a matter of policy, with lethal force always available.

Mattis went on to help lead the writing of the joint Army and Marine Corps counterinsurgency manual published in late 2006. The manual's central demand — protect and win over the population while staying ready to fight — is close to this rule at book length.

Contrasting Views or Controversies

Critics of the occupation point to what the rule assumes about the people it's applied to. A plan to kill everybody treats every farmer, shopkeeper, and child at a checkpoint as a possible target, and some argue a mindset trained on that assumption drifts, under fear and fatigue, from planning into reflex. Iraqis didn't experience the courtesy separately from the rifles.

It may also be less considered than all this: a commander giving young men a sentence with some swagger to it, the kind that sticks because of its last four words. The Marines who repeat it today mostly repeat those.

Practical Application

  • Individual: if your work puts you in front of strangers with some real risk, do your worrying in advance. Decide what you'd do in the bad case, and you can spend the actual encounter paying attention to the person.
  • Organizational: give staff the plan formally — exits, alarms, a word that means "get help now" — so nobody is left to decide on gut feeling whom to be wary of.
  • Civic: be careful when an institution borrows this rule for use on its own fellow citizens. An army abroad answers to its own chain of command. A police force answers to the people it's making plans about, and they're entitled to a say in how much of the plan they'll accept.

Background on the Author

James Norman Mattis (b. 1950) spent more than four decades in the Marine Corps and retired as a four-star general in 2013. He grew up in Richland, Washington, enlisted in the Marine Corps Reserve in 1969, and was commissioned in 1972 after graduating from Central Washington State College. He commanded the 1st Marine Division from 2002 to 2004, later led U.S. Joint Forces Command and served as NATO's Supreme Allied Commander Transformation, and finished his career as commander of Central Command, responsible for American forces across the Middle East. In 2017 Congress waived the usual waiting period for retired officers so that he could serve as Secretary of Defense, a post he held until his resignation at the end of 2018. His memoir, Call Sign Chaos, written with Bing West, appeared in 2019.


Perspectives

Standing Orders

It's a sentence written for a place: a checkpoint, a crowded market, a road where the car coming too fast is probably just late for something. Inside that place I can't find much to argue with.

Nothing in the sentence says where the place ends, though. It doesn't say everybody you meet in Anbar, or on this deployment, or until you're relieved. It says everybody. And a habit drilled for months, with a life riding on it, doesn't stop when the orders do. It gets into the shoulders and the eyes.

So I think about it after the uniform's been folded away — at a birthday party, in the grocery line, across a dinner table. No one there is in any danger. He's polite, he's professional, and some quiet part of him is still keeping track of the doors and everybody's hands, because that part was trained never to go off duty and nobody ever told it otherwise.

Everybody, it said. It was always a bigger word than the place it was written for.


Provenance — researched 2026-09-24
  • Attributed to: James Mattis (b. 1950), then a major general commanding the 1st Marine Division, U.S. Marine Corps.
  • Source: Thomas E. Ricks, Fiasco (2006), which gives it as "one of the rules Maj. Gen. James Mattis gave his Marines to live by in Iraq"; the passage also ran as an excerpt in Armed Forces Journal (August 2006).
  • Date & context: Winter 2003–04, when Mattis began training the division to operate differently from the Army on its return to Iraq in early 2004. Some later retellings place it during the March 2003 invasion; Ricks does not, and the line is not in Mattis's March 2003 eve-of-battle letter to the division ("No better friend, no worse enemy"), with which it is often conflated. Whether Call Sign Chaos (2019) reprints it was not confirmed. No printing earlier than Ricks was found; a 2005 American Spectator article ("Breaking the Warrior Code") sometimes listed beside the quote was obtained and does not contain it.
  • Verified wording: "Be polite, be professional, but have a plan to kill everybody you meet." (Ricks, as excerpted in Armed Forces Journal, checked directly.)
  • Corrected wording: "have a plan to kill everyone you meet" -> "have a plan to kill everybody you meet" — the earliest printed text found has everybody; everyone is a later popular form.
  • Status: Variant — genuinely Mattis's guidance as reported by Ricks from inside the division; the popular wording differs by one word. No written order or transcript fixes an exact date or audience.
  • Citation (Chicago):
    • Ricks, Thomas E. Fiasco: The American Military Adventure in Iraq. New York: Penguin Press, 2006.
    • Ricks, Thomas E. "Fiasco." Armed Forces Journal, August 1, 2006. http://armedforcesjournal.com/fiasco/.
    • "Jim Mattis." Wikiquote. Wikimedia Foundation. Accessed September 24, 2026. https://en.wikiquote.org/wiki/Jim_Mattis.

Provenance researched 2026-09-24.