 Their greatest point of contention came during an argument about their military service during the American Civil War, during which Cogburn ended their agreement of splitting the reward on Tom Chaney when they brought him back to Texas when LaBoeuf insulted Capt Quantrill.He did, however, thank LaBoeuf for saving his life when "Lucky" Ned Pepper was about to kill him and said he was in his debt before leaving with the snakebitten Mattie and promising to send help back.In both "True Grit" films, Cogburn confessed to having robbed something after the war before becoming a marshal, a bank in his youth in the 2010 film, and a federal paymaster in the 1969.