In message
"Brian Gaff" wrote:

I see they have put out a press release about fitting the first test heat
shield to the capsule, and in that release they mention the service module.
I've heard little about this piece of hardware recently and wondered what
was being launched on this unmanned test.

ESA are supplying the service module for the first two flights.
Simplistically it's the back end of an ATV with the Orion replacing the
pressurised volume.

Anthony