They aren't talking about the EU per se getting a military command layer, they're talking about the problem faced by a group of sovereign entities which mostly overlaps with EU member states.
Specifically, the problem of how those states can individually choose to plug their forces into a practiced system of military coordination.
Today, they can do that with NATO, but if they want an alternative, it doesn't exist and it will be difficult to build.
Specifically, the problem of how those states can individually choose to plug their forces into a practiced system of military coordination.
Today, they can do that with NATO, but if they want an alternative, it doesn't exist and it will be difficult to build.