Sending the MEF to war: Why East Coast Marines are focusing on MEF-level warfighting

That exercise included more than two dozen nations and an estimated 8,000 Marines participating. While that may seem substantial, equal to nearly four MEUs, it is a little more than half of the 14,500 Marines that make up a MEB and a fraction of the approximately 40,000 Marines in the MEF.

... read more at: https://www.marinecorpstimes.com/news/your-marine-corps/2019/07/24/sending-the-mef-to-war-why-east-coast-marines-are-focusing-on-mef-level-warfighting/