Before a state has the authority to grant a divorce, it must have both subject-matter jurisdiction over the case, and personal jurisdiction over the parties.
Subject-matter jurisdiction means that a particular state is the appropriate one to hear the case - e.g. people can't simply visit a state with which they have no contact, and obtain a divorce there simply because they like that state's divorce laws. Simply put, it prevents forum-shopping.
Personal jurisdiction is power over the parties to the case. If one spouse moves to, say, Texas, that state won't necessarily have jurisdiction to enter orders which affect the out-of-state spouse.
Requests for Military Mailing Addresses. Contains each service's addresses where one can send a request for a servicemember's military mailing address. (Formerly, the services had convenient worldwide locators, however these were shut down in the post-9/11 era).