Father Mulcahy and Radar would have won the Soldier's Medal, at the very least, for performing a life-saving tracheotomy under fire.
As Father Mulcahy is doing the tracheotomy, he pauses to say a prayer, but his mind freezes and he says a quick Grace. While he says that, Radar is just starting to mouth The Lord's Prayer.
Throughout the series, Radar either vomits or is nauseated by many things. In this episode it's riding in a jeep.
When Mulcahy is performing the tracheotomy he is not wearing his glasses. Reason being when protecting the soldier from a shell blast they were knocked off.