How To Write A Letter Of Dischacrge From Dep Militay . Contact the hotline today to discuss your options with a trained civilian. Make copies of the letter for yourself. Navy Letterhead Template Fill Online, Printable, Fillable, Blank from www.pdffiller.com As per our conversations, i am writing to formally notify you that i will perform active duty with the united states navy beginning on september 1. Your contact information (name, home address, email address, and phone number). Thanks in advance for being considerate and understanding.