For the rest it is simply what you call 'the fortune of war,' no?

And say to them that if we do not meet again, it is the fortunes of war.

The fortunes of war continued against him - but not forever.

We have done our best and it is the fortune of war.

The Reynolds family, in the same good spirit, replied by saying the general's death was "a fortune of war".

Men cannot live for ever, and such is the fortune of war.

They reversed the fortunes of war by making civilians take casualties rather than the military.

Other readers see it as a realistic if cynical, look at the fortunes of war.

How is the expression in English- the fortunes of war, no?

But that's the fortune of war, and I did not cast the lots.