On 17 July, his army began a laboured advance, arriving at Marienburg only on 25 July, by which time the new Grand Master, Heinrich von Plauen, had organised a defence of the fortress.
O 17 de xullo, o seu exército emprendeu un lento avance; chegou a Mariemburgo o 25 de xullo, pero para entón o novo gran maestre, Heinrich von Plauen, alistara a defensa da fortaleza.