I am suing someone, what if they claim they have no money, he is in the military and gets paid well, plus has a pension?

Once you win a judgment you generally have ten years to collect. There are several methods to collect the judgment. Some options include wage garnishments, bank levies, and attaching personal or real property so you get paid if the attached property is sold. Being a member of the military can delay payment in some circumstances, but does not prevent payment. Military wage can be garnished, but pensions are considered exempt. It is possible that if there is low income and little income that you cannot collect anything and that person becomes judgement proof.

Initially, if you win the suit you won't get a settlement, but rather you would have to collect on a judgment, and a plaintiff's ability to collect against a defendant is always an important and difficult issue to determine prior to proceeding in litigation.