Any person inducted into the armed forces under this title [sections
451 to
471a of this Appendix] for training and service, who, in the judgment of those in authority over him, satisfactorily completes his period of training and service under section
4
(b) [section
454
(b) of this Appendix] shall be entitled to a certificate to that effect upon the completion of such period of training and service, which shall include a record of any special proficiency or merit attained. In addition, each such person who is inducted into the armed forces under this title [said sections] for training and service shall be given a physical examination at the beginning of such training and service, and upon the completion of his period of training and service under this title [said sections], each such person shall be given another physical examination and, upon his written request, shall be given a statement of physical condition by the Secretary concerned: Provided, That such statement shall not contain any reference to mental or other conditions which in the judgment of the Secretary concerned would prove injurious to the physical or mental health of the person to whom it pertains: Provided further, That, if upon completion of training and service under this title [said sections], such person continues on active duty without an interruption of more than seventy-two hours as a member of the Armed Forces of the United States, a physical examination upon completion of such training and service shall not be required unless it is requested by such person, or the medical authorities of the Armed Force concerned determine that the physical examination is warranted.