This great Franciscan missionary  was attentive to the Poor Clares when he was on a preaching tour, often stopping to give conferences to the nuns, asking their prayers.
Towards the end of his life, the pope sent Capistran to Bavaria, Austria and parts of Poland to defend the Faith, especially in the Real Presence of Jesus in the blessed Sacrament.
He was in Breslau celebrating Mass, and fearlessly spoke out against the heretics who denied the Eucharist.  After he left the church, thieves, influenced by the heretics, broke into the church and stole some of the Hosts that Capistran had consecrated.
It is thought that the thieves had intended to desecrate the Hosts, which were wrapped in a linen cloth.  Before such a thing could happen, they began to bleed profusely. 
The thieves fled in fear and were later found in the forest when a Polish man rode by on his horse. Finding the blood-soaked Hosts, the man contacted the local priest. They were brought in solemn procession to the Church in Langenwiese.