commission

[suprunp]

“And here,” she said, giving him a rectangle of folded parchment sealed with a blob of red wax, “is your commission, and”—a second rectangle, thicker than the first—“here are your orders."
[...]
Thinking of Aroughs and of the siege he was somehow supposed to win caused Roran to press his free hand against his breast to check that the packet containing the orders he could not read and the commission he doubted he would be able to keep were still safely tucked in his tunic.
(C. Christopher; Inheritance)

What does 'commission' mean here? Is this 'If a member of the armed forces is commissioned, he or she is made an officer.' Collins Cobuild Advanced Learner’s English Dictionary?

Thanks

[Rover_KE]

It is the official document confirming his status as a military officer.

Rover