The Colonial Military Code refers to the rules and regulations which govern the actions of the Colonial Fleet and Colonial Marine Corps.
After being rescued from Kobol, Galen Tyrol is interrogated by Colonel Tigh about his relationship with Sharon Valerii after her attempted assassination of Commander Adama. During his interrogation, Tyrol attempts to invoke his "Article 21 rights"; presumably the right to legal counsel (TRS: "Resistance").
When Karl Agathon, as executive officer of the Demetrius, attempts to relieve Kara Thrace of command, he invokes his authority by citing Article 10 of the Code (TRS: "The Road Less Traveled").
Notes
- It appears the Colonial Military Code is analogous to real-world documents such as the Uniform Code of Military Justice (UCMJ) which governs the United States armed forces.