Moradi and Miller noted that further research is needed to explore these and some of the other findings of the study, such as the general pattern that high-grade enlisted personnel and officers were more supportive of the ban than low- and mid-grade enlisted personnel.

Not surprising. Higher ranked army members are going to be older by far than lower ranked ones. I think any survey of any population’s support for DADT will show older people will be less supportive than younger people.