 CONT: Milner is shot in the left arm by a suspect resisting arrest.  When Milner next appears, his arm is in a sling. After that scene  and for the rest of the episode, he appears without the sling and  with his arm working perfectly. Since the events of the episode are  identified as taking place all within the first 22 days of June,  leading up to the German invasion of the Soviet Union, which is  announced at the episodes end, there would not have been enough  time for him to make such a complete recovery.