DA Form 3575 at a glance
What it is: DA Form 3575 is the Certificate of Acknowledgement and Understanding of Service Requirements for individuals applying for appointment in the USAR under the provisions of AR 135-100, or AR 135-101, as applicable.
Who signs: This form with your signature will be submitted with your request for appointment and indicates that you understand and accept all of the contractual service requirements contained herein.
All interested applicants who do not have a statutory service obligation execute it and submit it in 3 copies with the application for appointment as a commissioned or warrant officer in the USAR.
A filled-in DA Form 3575 example: an applicant signs the certificate

How to fill out DA Form 3575, box by box
More rules for DA Form 3575
If I accept an appointment as a commissioned or warrant officer in the Army Reserve, I understand and agree to comply with the following service requirements for the entire period that I hold a USAR appointment.
I agree to participate satisfactorily in the Army Reserve during the entire period that I am a commissioned or warrant officer in accordance with the rules and regulations now in effect or which may hereafter be placed into effect by proper authority.
I will enter on active duty or active duty for training when ordered by competent authority.
As a member of a Reserve Unit, I will attend all scheduled unit training assemblies (at least 48 per year) unless excused by proper authority.
As a member of a unit, I will satisfactorily complete one period of annual active duty for training of not less than 14 days per year exclusive of travel time.
If I am not assigned to a unit, I will be assigned to the individual Ready Reserve (IRR) and while so assigned, if so ordered by competent authority, will perform not more that 30 days active duty for training annually.
I will keep my commander advised of my current mailing address at which I will receive official correspondence.
I will reply to, and comply with all official orders and correspondence which I may receive.
During the time that I am a commissioned or warrant officer and a member of the Ready Reserve, I may at any time be ordered to active duty involuntarily as an individual, or as a member of a unit in the event of war or emergency declared by Congress, or the President of the United States, or under any other conditions authorized by law in effect at the time of my appointment, or which may hereafter be enacted into law.
Sources
[1] DA Form 3575, JUN 84, Certificate of Acknowledgement and Understanding of Service Requirements, U.S. Army (the Official source link on this page).


