Major General Sir Isaac Brock really didn't want to be in Canada during his tenure between 1802 and 1812. He was hoping to gain glory, renown and cash fighting in Europe against Napoleon.
If he had gotten his wish and been replaced in 1810, who do you think his replacement in Upper Canada would have been.
If he had gotten his wish and been replaced in 1810, who do you think his replacement in Upper Canada would have been.