The emphasis on the development of canon law prioritised the struggle over that of the struggle with empire, hence the 'politico-diplomatic' aspect of the first crusade tends to get overlooked
They were used to profane wars and thus the question surrounding them is less whether religion could be a valid basis for war but could Christians fight at all?
The 1st Crusade wasn't a war to encourage conversion, as this went against both Christian doctrine and The Jihad but rather to turn people into tributaries
An 'odd-job man' who carried out activities such as prayers in Jerusalem and being an ambassador for unbelievers, and led the first crusading army to failure
Peter arrived late as he could not handle such a range of people, and the Emperor Alexius forced them into Asia Minor as they were causing mass destruction such as ransacking houses and churches