in wartime
during wartime

He added, half to himself, The things you have to do in wartime.

But in wartime, leaders know there will be an end and can plan ahead.

You have no idea how often this sort of thing comes up in wartime.

It was just one of those things that happen in wartime, when you're both alone a long way from home.

That opportunity, he felt, would come, as it comes to all in wartime.

But the medical staff would expand to 1,200 in wartime.

The complement in wartime should be four times as strong.

Then again, even international human rights law is flexible in wartime.

Foreign directors have long turned an eye toward America, particularly in wartime.

In wartime not even a human can believe that he is going to live forever.