Subject: Request for Extension on Missing Assignment

Dear [Instructor's Name],

I hope this message finds you well. I am writing to address the missing online assignment for the Theories of War Course, which was due at 2359 hours yesterday.

Unfortunately, I was unable to submit the assignment due to [briefly explain your reason, e.g., unforeseen circumstances, illness, etc.]. I understand the importance of meeting deadlines and sincerely apologize for any inconvenience this may have caused.

If possible, I would greatly appreciate an extension to complete the assignment. I believe that with a little extra time, I can submit work that reflects my understanding of the course material.

Thank you for considering my request. Please feel free to reach me at [Your Contact Information] for any further discussion.

Best regards,

[Your Name]
[Your Student ID]
[Your Contact Information]