2504

2504 was a year in the 2500s in the 26th century.

January
January 2
 * A battle takes place in the Theta Ursae Majoris System between the UNSC and the Insurrectionists.

June
June 19
 * James Cutter is sent to the Officer Candidate School where he was taught Command and Navigation.

Unknown

 * The UNSC Secrets Act of 2504 is passed.