Pas un coup de fusil = On n’entend pas un coup de fusil

33, 6. Qu’y a-t-il: What’ s the matter ?

7. Mon capitaine: When addressing an officer, civilians, soldiers, and officers of a lower grade generally use mon before his title.

35, 9. Il se sera perdu: The future perfect is often used in French to express probability. Translate, He must hâve lost his way or He has probably lost his way.

18. semble-t-il: Parenthetical sentences are inverted in French. Translate, as it seems.