because you mention the napoleonic wars .
even 190 years áfter the battle of waterloo( one of my all time favorite battles)
many historians are still in twist with each other about this battle.
was it a british victory, a german victory , a dutch or simple a allied victory, there is enough controversy between the historians.
but maybe in few 100 years, when "we" are all citizen of the world and there is no national proud left , maybe then it is possible to talk about history in a reasonable wise.
( but of course ,in 100 years without us
)