Perhaps not terribly surprising, but somewhat opposed to the Powell endorsement:

A poll by the Military Times newspaper group suggests that there is overwhelming support for John McCain among U.S. troops in every branch of the armed forces by a nearly 3-1 margin.

According to the poll, 68 percent of active-duty and retired servicemen and women support McCain, while 23 percent support Barack Obama. The numbers are nearly identical among officers and enlisted troops.