He went to Italy in 1338, entered the service of the Lords of Venice and fought against the army of Verona led by Mastino II della Scala.
In 1354, after Urslingen had died and Fra' Moriale had taken over the leadership of the Great Company, Landau rejoined its ranks and fought in various conflicts with Pisa, Siena, Florence and Milan.
Konrad von Landau serves as a case study to better understand how people profited from chaotic wars, famine, and the plague.
Some of these conflicts involving Konrad von Landau include disputes over the land between many of these northern Italian cities.
The importance of bishops in the 14th century boils down to the notion that they developed the laws and collected resources and taxes from the lands in their county.
Aside from inner city conflicts, the massive famine and the plague are other major contextual events relating to Konrad von Landau.
This is partly due to failing farms as individuals looked to the city to find security amidst the countryside.
However, historians like Norman Housley, Mallet, and Caferro provide some description of his endeavors in English, specifically while he was in charge of the Great Company.
Many historians have looked to primary and contemporary sources such as Matteo Villani, Dante, Bruni, and Machiavelli, of whom the latter three held distasteful opinions on the mercenary companies and the routers.
Conrad summarizes that, for the Great Company, it was custom to steal and kill those in both cities and the local countryside who resisted funding them.
Other translated and accessible primary sources that discuss the Great Company in greater length include the Biccherna budget in Siena and the Cronica Senesi.
The latter consists of data and statistics that provide insight to the expansive toll the Great Company took on a cities resources and finances.