No, WP specifically doesn't want birth certificates or military ID cards, which are a form of primary source. WP wants you to cite other published works (ideally a URL to another reputable source) that document the facts in question.
For military or government officials, their office or command often will have a web page noting the names of their current/former executives, COs, XOs, etc. They might also have issued a press release when a notable person joins their organization, or which quotes the person in question.
If there are zero public sources documenting where your relatives are employed or assigned, then it's arguable that these relatives are not actually notable enough to warrant mention in the WP article.
WP ia not intended to be a directory of all facts or people.
For military or government officials, their office or command often will have a web page noting the names of their current/former executives, COs, XOs, etc. They might also have issued a press release when a notable person joins their organization, or which quotes the person in question.
If there are zero public sources documenting where your relatives are employed or assigned, then it's arguable that these relatives are not actually notable enough to warrant mention in the WP article.
WP ia not intended to be a directory of all facts or people.