This is what the Methodist Church actually says on the subject:
"The Methodist Church teaches that war is contrary to the spirit, teaching and purpose of Jesus Christ. On the other hand Jesus did not condemn the Centurion (Luke 7:1-10) or even Pilate himself for being part of the military arm. Instead he reminded Pilate that he had received his authority from a greater power and remained accountable to that power (John 19:10-11)."
Of course people pray for soldiers in Methodist churches, as they pray for the sick, for victims of natural disasters and for sinners. And of course there are ex-soldiers as there will be ex-burglars. Possibly even ex-murderers, even by your definition. That doesn't mean they endorse war.