LTC (Ret) Sean F. Mangan

Expert in UCMJ and military legal matters, routinely representing Soldiers, Sailors, Marines, Airmen, and Coast Guardsmen in Military Criminal Investigations and Command Investigations. Experienced in Sexual Assault, Sexual Harassment, Domestic Violence, Internet Offenses, Toxic Leadership, Hot Urinalysis Results, Article 120, DHA Clinical Adverse Actions, and other military offenses. Proven results in Courts-Martial, Administrative Separation boards, and Military Medical Privileging cases. Successfully handled letters of reprimand, bars to reenlistment, negative evaluation reports, and other admin matters.

For 30 years I've worked criminal cases, on the streets and in the courtroom, civilian and military, and at local, state, and federal levels. I've been a law enforcement officer, Soldier, prosecutor, defense counsel, magistrate, appellate counsel, law professor, and judge. I've been certified by the Army at the highest level of military legal proficiency as a "Master Military Justice Practitioner" (ASI-3T). As a retired Army JAG Lieutenant Colonel, with prior operational and law enforcement experience, I bring my full range of skills, knowledge, and abilities to serve you.

Army Command & General Staff College

ILE-CC (2011) | Leadership

2011 - 2011

Intermediate Leadership - Core Curriculum (Fort Lee Campus)

TJAGLCS

LL.M. (2009) | Military Law, Criminal Law Cert.

2008 - 2009

University of Oregon School of Law

J.D. (2003) | Law, Criminal Law Specialty Cert.

2003 - 2003

Honors: Superior Advocate, Mock Trial

Gonzaga University

B.A. (1996) | Sociology & Philosophy

1992 - 1996

Honors: Cum Laude

Legal Counsel

Independent

2020 - Current

Private Legal Counsel, available to represent military personnel and their families. 100+ clients served to date

Criminal Law Policy Attorney

US Army

2018 - 2020

Senior Policy Attorney for Criminal Law Division, Office of the Judge Advocate General, Headquarters, U.S. Army. Involved in edits of Manual for Courts-Martial and the rewrite of Army criminal law regulation (AR 27-10). Advised on issues of criminal law and corrective-action policies for senior Army leadership.

Trial Judge

US Army

2015 - 2018

Military Judge, U.S. Army Trial Judiciary. Handled the full range of offenses, legal issues, and hearings in military justice trials, including presiding as judge-alone court and sentencing authority.

Regional Defense Counsel

US Army

2013 - 2015

Senior and supervising defense counsel for Southwest Continental United States (SW-CONUS). Led and managed 30 defense counsel (and their support staffs) responsible for all military justice matters in SW-CONUS, approximately 25% of all Army courts-martial trials.

Professor of Criminal Law

TJAGLCS (DOD)

2010 - 2013

Faculty at the DOD's only ABA-Accredited / LLM-granting law school: The Judge Advocate General's Legal Center and School (TJAGLCS). Taught the full range of topics in criminal law and procedure to a variety of resident and non-resident courses, with students ranging from newly-commissioned military attorneys to military judges.

Special Operations Legal Counsel (Deployed)

DOD/Joint Task Force

2009 - 2010

Led a Joint/Multinational Team of Intel Agents, Law Enforcement Agents, Attorneys, Paralegals, and Iraqi Legal Personnel in direct support to Tier-1 US SOF Task Force, warranting and prosecuting high-value terrorism suspects in foreign courts.

LLM Candidate

US Army

2008 - 2009

LLM in Military Law, with Special Certificate in Criminal Law and Military Justice

Supervising Appellate Counsel

US Army

2007 - 2008

Supervised a Branch of 8 Appellate Attorneys in the Defense Appellate Division, US Army Legal Legal Services Agency

Appellate Counsel

US Army

2006 - 2007

Appellate Defense Counsel, US Army Legal Services Agency. Appealed court-martial convictions and legal issues to the Army Court of Criminal Appeals, Court of Appeals for the Armed Forces, and Supreme Court of the United States.

Special Assistant United States Attorney

DOJ

2005 - 2006

Chief of Military Justice

US Army

2005 - 2006

Senior and Supervising Prosecutor for JRTC & Fort Polk, LA. 50 courts-martial and 300+ adverse legal actions per year.

Military Magistrate

US Army

2004 - 2004

Part-time military magistrate: issued warrants, reviewed and approved pretrial confinement

Chief of Administrative Law

US Army

2004 - 2004

Senior and Supervising Counsel for all admin/civil legal issues on JRTC & Fort Polk: ethics, employment, environmental, contract, admin investigations, etc.

Administrative Law Attorney

US Army

2003 - 2004

Handled the full range of government administrative law issues

Intern Prosecutor

Lane County Prosecutor's Office

2002 - 2002

Solo-tried multiple criminal cases, assisted on major felony cases

Intern Prosecutor

US Army

2001 - 2002

While in law school, assisted during summer months at the Fort Lewis (JBLM) Military Justice Shop, prepping cases and leveraging my law enforcement experience to aid in criminal prosecutions.

Officer

US Army Military Police

1996 - 2000

Commissioned Officer of US Army MP Corps. Served in both law enforcement and tactical roles, in both action and leadership positions. Later served in support of Army Prosecutor offices in case-support role, prior to becoming a licensed attorney and Army Judge Advocate.

Army Regulation 27-10 (2019 Revision Team)

US Army

2020

DD Form 453 - Military Subpoena Form

Department of Defense

March, 2019

Crimes and Defenses Deskbook

TJAGLCS-ADC

May, 2011

Military Justice Overview & Update, Seattle, Wa

2016

Washington Bar Association - Military Law Section (LAMP)

Master Military Justice Practitioner (ASI 3T)

U.S. Army

2019

UCMJ Article 27B

DOD - Practice in Courts-Martial for all Services of the US Armed Forces

2003

Bronze Star Medal

DOD

2010

Superior Trial Advocate Award

University of Oregon School of Law

2001

Washington Defenders Association

Member

2021 - Current

International Association of Military Criminal Defense Lawyers

Member

2020 - Current

Washington State Bar Association

Member

2019 - Current

Oregon State Bar

Member

2003 - Current

American Bar Association

Member

2000 - Current

Oregon

Oregon State Bar

ID Number: (Currently Inactive Member)

Since 2003

UCMJ / Military Justice System

Since 2003

Washington

Washington State Bar Association

ID Number: 55286

Since 2019

Air Force Court of Criminal Appeals

Since 2023

Army Court of Criminal Appeals

Since 2006

Court of Appeals for the Armed Forces

Since 2006

U.S. Supreme Court

Since 2007

• Free Consultation
  Free confidential legal consultation available, to be scheduled upon request.
• Credit Cards Accepted
• Rates, Retainers and Additional Information
  Primarily flat fees to give clients clarity and control. Only current action/phase is billed. Billing through Clio Payments: electronic invoice & secure link sent directly to client.

• Military Justice and Adverse Actions (all services)

Q. How far from base can you live? My ex is stationed at JBLM WA and "moved" to Michigan.

August 17, 2023

A: Several things govern where a service member may reside. Local policies will dictate how far from the installation an individual can be. These "local pass" rules effectively set a distance limit that service members must stay within and must seek approval (a "mileage pass") if they exceed it. Additionally, service members may have provisions in their current assignment orders dictating where a service member may live while assigned to a particular unit. This is important because it implicates the Basic Allowance for Housing (BAH) that the service member is entitled to. It is important to remember that every assignment is different. There are many times that a service member is assigned to a unit at one installation but is authorized to perform duty somewhere else. For example, when I was a military judge I was assigned for to a Washington DC-area organization (the Army Trial Judiciary) located at Fort Belvoir, but my orders authorized my place of duty and residence in the JBLM area. Without knowing all the details of your ex-husband's assignment and orders (and possible authorized modifications) is is impossible to answer your question with certainty. ... Read More

Q. I been married for 19yrs and have been a Military stay at home mom and my husband is decided he doesn’t want me anymore

July 21, 2023

A: You are absolutely entitled to more than just child support. Your military spouse is likely going to receive a military pension, which is a considered to visible property, and you will be entitled to a portion of that property in the divorce process as you would any other piece of property such as a house or investment fund. I highly recommend that you retain an attorney who specializes in military benefits for the resolution of your divorce case. In the meantime, I would recommend that you contact his chain of command, and request that he be ordered to provide interim support to you during the ongoing divorce process and separation.

Q. If I am a former prisoner at a military correctional facility am I allowed to contact other former inmates?

September 12, 2022

A: It depends on the conditions of your release. For service members who served a longer sentence (those over 10 years and usually those over 20) there is the possibility of early release through a parole system. When released, those individuals may carry similar conditions on release that limit who they have contact with. If you served your sentence fully and was released, then normally there is no prohibition on who you contact with. (However, there may be other orders/authorities from the military or other jurisdictions, depending on your case, that could impact you.)