What's the Difference Between War and Crusade?

In 1098 the first siege of Antioch ended in, that was part of the first crusade. The second siege of Antioch began five days later. That shows the stamina professional sieged as... Nowadays, there'd be one to get at least six months off the rest. We're not back in 1098. You had five days off to check whether you're alive, dead or in between. Shake off the odd part of plague or dysentery and then get back to business. Have we moved on as a species? I'll let you be the judge of that.