Do not assume a veteran wants to discuss service immediately. Let them choose the detail and timing, especially around combat, injury, or loss.
What matters in practice
Practical understanding matters more than heroic language. Some veterans value routine and directness; others do not. Ask about the individual instead of borrowing a movie character.
If trauma or health concerns arise, respond with respect without trying to become a clinician. A partner can be supportive while still maintaining healthy boundaries.