At that time, people been not so brainwashed like today.
They were more cultured and had notions of morality.
For example:
In Crimean War at 1855.
Franch an Russian solders come together and drinked wine, when the batle was stopped.
And rushed to each other side, when fight begans again.
I do not think it is possible in modern days, in modern warfare.
I could be wrong =]
What do you think ???