(Acts 10:1-8) 10
Now in Caes·a·re´a there was a certain man named Cornelius, an army officer of the Italian band, as it was called, 2 a devout man and one fearing God together with all his household, and he made many gifts of mercy to the people and made supplication to God continually. 3 Just about the ninth hour of the day he saw plainly in a vision an angel of God come in to him and say to him: "Cornelius!" 4 The man gazed at him and, becoming frightened, said: "What is it, Lord?" He said to him: "Your prayers and gifts of mercy have ascended as a remembrance before God. 5 So now send men to Jop´pa and summon a certain Simon who is surnamed Peter. 6 This man is being entertained by a certain Simon, a tanner, who has a house by the sea." 7 As soon as the angel that spoke to him had left, he called two of his house servants and a devout soldier from among those who were in constant attendance upon him, 8 and he related everything to them and dispatched them to Jop´pa.
Of course if you continue reading we learn that Cornelius was one of the first gentiles to accept the faith. Nowhere do you see Peter telling him that he needed to get a discharge from the army... in fact it was god himself who called him while he was a soldier. So why does the WTS make people leave the military before allowing them to get baptized or consider you disassociated if you join the military?