Boethiah cares little of petty oaths, in case you haven't noticed Boethiah's Legion is a catalyst for Boethiah to spread her influence...
I know that but In character, Aventius will be offended that Cassamir broke some oath that was an important part of Colovian culture
On the eve of battle would you really want to force your men to march for 14 hours? I don't doubt that they could make it, I just doubt that they'd all make it. Not all of these men can be hardened warriors, some must be conscripted farmers and builders, that sort of treatment would lead to desertion.
True. Most of the army are within the early 20s/late teens.(18 and 19) I guess halfway there, they rest for a few hours, but continue marching after that and arrive at 4 to 6 in the morning?