This chapter coincides perfectly with AFfC chapter 5; the first Sam chapter. It even has much of the same dialogue.
Jon is stressing over a letter where he's trying to shame Tywin into sending men so he doesn't look weak compared to Stannis. Then we get to see the previously unseen meeting where Jon gets Gilly to agree to the baby swap.
After meeting with Sam to send him off to Oldtown (Sam gives him an odd look when he mentions Bran; we know that this is because Sam wants to tell Jon that Bran is still alive but has promised Coldhands not to), he reminisces about how Aemon advised him to stop being a big baby and grow up now that he is the Lord Commander.
To this end, when Jon orders Janos Slynt to go and defend a derelict fort, and Slynt refuses, Jon chops off his head. Quite right too. Stannis agrees. You can't be seen to allow men to disobey orders. Jon is doing a good job so far.
