It depends on how it is done but what we are drifting into, which is that people grow up without any sense of a spiritual dimension to life, is just impoverishing.
I may be wrong in that, but not I think in putting the questions. In our modern democracy the government needs not a unanimous but a general support for war before it orders our forces to fight.
There is no consensus even today on the merits of Napoleon - and certainly no agreement on the rights and wrongs of the origins of the First World War.
We must admit that history is enjoyable to a large extent because it enables us to pass judgment on the past.
Men like Hitler and Stalin and their immediate lieutenants cannot plead in defence of their actions that these were justified by the accepted values of that time.
There are thus great swathes of the past where understanding is more important and reputable than judgement, because the principal actors performed in line with the ideas and values of that time, not of ours.