Unfortunately, separation and divorce affect U.S. Servicemembers as well as the public. Many military spouses lack the ability to retain legal counsel and may resort to a Do-It-Yourself Kit. I do not recommend this for many reasons.
If a military spouse can afford counsel, counsel still has to make service of process on the SM. If this is a simple case--for example, a 1-year marriage, no assets, no children, no support case--service of process may be informal simply because both parties want to end the marriage. The defendant service member may be cooperative in ending the marriage. The judgment would have to include a provision that states that the servicemember was advised of his/her rights under the Servicemembers Civil Relief Act and intentionally, knowingly waived those rights.