DUBAI, United Arab Emirates (AP) — The British military launched airstrikes with the United States targeting Yemen's Houthi rebels, officials said early Wednesday, their first involvement with America's new intense campaign targeting the Iranian-backed group.

American forces have hit more than 1,000 Houthi targets in Yemen as part of a campaign that began in March to stop attacks by the militants on the shipping lanes of the Red Sea, the Pentagon said Tuesday.

U.S. airstrikes targeting Yemen's capital killed at least eight people overnight, the Houthi rebels said Monday, as the American military acknowledged carrying out over 800 individual strikes in their monthlong campaign.