 Given the details in the article, what best describes Captain Walsh and Major Polk's relationship?
Perhaps there was method in Colonel Walsh's madness—murder-madness—when he ordered Major Polk to scan the planet for a guy named Joe. The rest was gravy, and Colonel Walsh wasn't going to let me get by with gravy. "It will be a simple assignment, Major," he said to me, peering over his fingers. If Walsh really wanted to know the reasons for the revolt, I could give them to him in one word: Walsh. And I thought about Colonel Leonard Walsh and how he was supposed to be quelling that revolt. My orders said I was to report to Captain Bransten immediately upon arrival. Very.... "You Major Polk, sweetheart?" "Yes," I said, still thinking of Colonel Walsh.
 They had strong disdain for each other.
 They had strong disdain for each other.  They often bantered while still being close friends.  They enjoyed competing with each other.  They liked to make jokes out of each other.