OK, this may be somewhat too obvious, but since today is the 100th anniversary of Armistice, how about The Soldiers of Science Fiction: any sci-fi character belonging to some type of military organization.
(I was originally thinking something around peace/armistice, but that might be too difficult, and this one should provide plenty of choices.)
(I was originally thinking something around peace/armistice, but that might be too difficult, and this one should provide plenty of choices.)