US forces have struck more than 1,000 targets in President Donald Trump’s campaign against Houthi militants in Yemen, the Pentagon said, offering rare insight into a stepped-up offensive that’s been conducted largely in secret.

For 50 nights beginning March 15, the U.S. military pounded Houthi targets in Yemen with “unrelenting” forces, including bombs from fighter jets and missiles from warships, to restore freedom of navigation in the Red Sea.