"Kahless and Lukara killed Molor's soldiers."
Translation:molor mangpu' HoH qeylIS luqara' je.
A prefix for the verb, you mean? Yes.
For example, molor luHoH qeylIS luqara' je for "Kahless and Lukara killed Molor" (plural subject, singular object -- verb prefix lu-).
The prefixes for the verb are always there; they're not optional the way pronouns or the plural suffixes are.