It has made formal declaration of war uncommon after 1945.

It's a good thing he's never made a formal declaration.

He did not bother to seek a formal declaration of war.

No. 22 did not fly against ground targets until three days after the formal declaration of war.

There's been no formal declaration of war between our two countries.

"Is there a document, a record, of any such formal declaration?"

All it would amount to was a formal declaration of war.

No formal declaration is required if the goods are less than €10,000 in value.

"Then we should have little political opposition to a formal declaration of war."

That's the last time Congress approved a formal declaration of war.