Perhaps this decision was prompting by his brother Konrad VII the White, who fight at the side of the Teutonic Order in 1410 in the Battle of Grunwald.

During the solemn religious vows of submission in Malbork Castle, Konrad VIII was accompanied by all his brothers.

Committed themselves to assist in the Order, if that was attacked by the army of King Wladyslaw II Jagiello of Poland and Grand Duke of Lithuania Witold.

The highest religious position exercised by him was the office of Provincial of the Teutonic Order in Bohemia and Moravia.

Konrad VIII, despite the adoption of the religious state, didn't give up his rights over the government of his Silesian lands.