Section 4
SEC. 4. In the case of legal heirs who are minors or incompetents, the Judge Advocate General is hereby empowered to name the best qualified guardian for the said heirs, who shall discharge his duties as such in accordance with the instructions and orders of the Judge Advocate General: Provided, however, That the widow, and in case of her inability, the oldest child, if of age, shall be given the preference in the appointment of such guardian: Provided, further, That before a guardian appointed here-under enters upon the execution of his trust, he may be required to give a bond, in such sum as the Judge Advocate General directs, and under such conditions as he may prescribe.