http://www.dtic.mil/whs/directives/corres/html/134410.htm
Selected portions of the DOD Directive that seems to have been invoked to extract revenge on Missouri State Senator Jon Dolan for his actions in the override of Governor Holden's vetoes in September of 2003.  It appears this directive is designed to prohibit partisan politics that would bring discredit on the DOD, the military or the central government.  The only observable discredit is upon the misguided actions of the governor and his cohorts.

Department of Defense

DIRECTIVE

NUMBER 1344.10

June 15, 1990

SUBJECT: Political Activities by Members of the Armed Forces on Active Duty

...

4. POLICY

It is DoD policy that a member of the Armed Forces (hereafter referred to as
"member") is encouraged to carry out the obligations of a citizen. While on AD,
however, members are prohibited from engaging in certain political activities.

...

4.1.2.2. Be a candidate for, or hold, civil office except as authorized in
paragraphs 4.2. and 4.3., below.

...

4.3.1. Except as authorized by paragraph 4.3.3., below, or otherwise
provided for by law, no member on AD may hold or exercise the functions of civil
office:

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4.3.1.2. In the government of a State; the District of Columbia; a
territory, possession, or commonwealth of the United States; or in any political
subdivision thereof.

4.3.3. As long as they are not serving on EAD, enlisted members and
Reserve officers may hold partisan or nonpartisan civil office if such office is held in a
private capacity and does not interfere with the performance of military duties.

... [retirement resignation]

E2.1.4. Extended Active Duty (EAD). AD under a call or order for a period in
excess of 270 days.

...

E3.3. EXAMPLES OF PROHIBITED POLITICAL ACTIVITIES
In accordance with the statutory restrictions in 10 U.S.C. 973(b) (reference (b)) and
references (g) and (h), and the policies established in section 4., above, of this
Directive, a member on AD shall not:

...

E3.3.7. Serve in any official capacity or be listed as a sponsor of a partisan
political club.

...

E3.4. POLITICAL ACTIVITIES NOT EXPRESSLY PERMITTED OR
PROHIBITED
Some activities not expressly prohibited may be contrary to the spirit and intent of
section 4. of this Directive or section E3.3. of this enclosure. In determining whether
an activity violates the traditional concept that service members should not engage in
partisan political activity, rules of reason and common sense shall apply. Any activity
that may be viewed as associating the Department of Defense or the Department of
Transportation, in the case of the Coast Guard, or any components of such
Departments directly or indirectly with a partisan political cause or candidate shall be
avoided.

...

E3.6. ADDITIONAL REQUIREMENTS
Members of the Armed Forces on AD engaging in permissible political activities shall:
E3.6.1. Give full time and attention to the performance of military duties during
prescribed duty hours.
E3.6.2. Avoid any outside activities that may be prejudicial to the performance of
military duties or are likely to bring discredit upon the Armed Forces.
E3.6.3. Refrain from participating in any political activity while in military
uniform, as proscribed by DoD Directive 1334.1 (reference (f)), or using Government
facilities or resources for furthering political activities.

...

Enclosure 4 . . . 

(3) Except as otherwise authorized by law, an officer to whom this subsection
applies may not hold or exercise, by election or appointment, the functions of a civil
office in the government of a State, the District of Columbia, or a territory, possession,
or commonwealth of the United States (or of any political subdivision of any such
government).