No, he doesn't go around trying to convince other soldiers that God doesn't exist and no, he doesn't throw his disbelief in other soldiers' faces. Spc. Jeremy Hall just wants not to be harassed for his atheist beliefs.
Hall has filed a lawsuit which includes Secretary of Defense Robert gates as one of the defendants. He says that the Christian religion is pushed on soldiers and that he has been passed over for promotion because superior officers believe that he would be unable to bond with those under him unless he believes in God.
You can read more about it at the Topeka Capital Journal. Hall is based at Fort Riley, Kansas.