She's the blonde in bed with Bus when Charlie bursts in to apologize and volunteers to be shipped out (after discovering that the timing of the flights will put him out of harm's way - or so he thinks).
She's doing her nails during their conversation. She didn't receive credit because she had no lines of dialogue.
I'm not sure if that's her, shootr2. The credits already list three women -- Janine Gray, Judy Carne, and Kathy Kersh -- as the women with James Coburn when James Garner interrupts.