Sorry, what weight does an MOH or general officer endorsement carry? It seems like a cynical move to get the military vote IMO.
They want to be the Commander in Chief, the support of high ranking Officers and MOH recipients show that they may agree with their foreign policy stance and that the troops should be willing to follow their orders. Across the board, that's 2 million active, NG and Reserve votes. And another 20+ million Veteran votes.