According to John Vandiver’s report, Allen would take over NATO and EUCOM in the spring, pending confirmation from the Senate.
The 36-year military veteran would succeed Navy Adm. James Stavridis.
Vandiver reports Stavridis, also a 36-year veteran, is expected to retire.
He took over leadership of European Command in 2009 following service as head of Southern Command.
Allen would be succeeded by Marine Gen. Joseph Dunford, currently the branch’s assistant commandant.
Traditionally, the head of European Command also doubles as NATO supreme allied commander.