The General was wearing the short sleeve uniform with a poplin jacket. The short sleeve shirt is designed to be worn with the collar open; the white t-shirt shows.
But then it's not unusual for generals (of any service) to bend the uniform regulations.
And those were stars, not bars.
__________________ ASF Causa latet vis est notissima - the cause is hidden, the results are well known.
Alpha Alpha (University of Oklahoma) Chapter, #814, 1984