It was on Christmas Day of 1914, when the trench warfare of WW I was raging on the western front. The German and French soldiers, who hours before had shot at each other came out of the trenches and met, exchanged cigarettes, wine, whiskey and cakes. They sang carols to each other, exchanged addresses, and showed each other pictures of their families.
In the days after this event, they refused to shoot at each other.
Fraternization with the enemy is treated as treason in war. In subsequent years, officers immediately squashed any attempts at this, and it never happened again.
War is the game old men play with the lives of the young.
No wonder the old men don’t like it when the young men exchanges pictures of their families. They might realize that both sides are human, and both sides are actually the same. They might realize the insanity of the war. We can’t have that!
War must be taken seriously, the old men say.