What are the differences between Jim and Wilson in the story The Red Badge?

Jim Conklin, the tall soldier, as he is described by Crane, is more realistic about war than Henry. He tells Henry: "You jest wait 'til tomorrow and you'll see one of the biggest battles ever was." Without illusions about war, Jim is not as impatient as Henry is to enter into the fray. When asked by Henry if any of the soldiers will run from battle, Jim answers that some will run, but most will stay and fight after they start shooting. If most of the company runs, says Jim, he will run too, but if most stay and fight, he will follow. Jim further points out that all the new recruits are untried in battle. Jim also enjoys being the center of attention when he spreads the rumor of troop movement and encounter with the enemy. He is mortally wounded in battle and tells Henry that the great fear he has is that he will fall down in the road and be run over by a wagon. He then races off into a field, repelling Henry's and the tattered soldier's attempts to help him. Jim dies a true hero.

Known as the Loud Soldier, Wilson is a boastful new recruit anxious to fight and unable to admit the possibility of his cowardice in the initial confrontation with the enemy. After battle, however, he becomes strangely quiet and is no longer his usual bombastic self. He reveals his fears through his action of giving Henry a packet of letters for Wilson's family in case he does not return home. The battle clearly has a profound effect on him; he assists his fellow soldiers and takes a prominent position in later battles.