Richelieu had at first invited, and then in the name of the king commanded, Bouillon to expel his guest.

This the duke absolutely refused to do, and becoming deeply offended at the manner in which he was pressed, joined the party opposed to Richelieu.
It was for this reason that the cardinal decided not to appoint Turenne to the command, knowing the warm affection that existed between the brothers, and fearing that Turenne might be influenced by Bouillon, and might, beloved as he was by the soldiers, lead many of the troops away from their allegiance were he to join the party opposed to him.

He therefore appointed the Count d'Harcourt to the command.

He had proved himself a brilliant officer on many occasions, and Turenne did not feel in any way aggrieved at his being placed over him.

He made a rapid journey to Paris to arrange with the cardinal and d'Harcourt the general plan of the campaign, and was now setting out again to make preparations for it.
Hector Campbell enjoyed the journey greatly.