“What is there about the Armys culture that is different?”
He says the Navy is focused on the ship, and the Army is focused on the people. The culture variance starts from there.
He was recently in an assignment where the leaders were Navy and the workers were Army. The lack of respect for, and ability to work with, the two cultures made the working environment perfectly awful. Eventually the Naval officer in charge was replaced, but the new officer in charge will have a lot of work on his or her hands.
I understand that in the Army a soldier can rise through the ranks from very low to the top, while in the Navy there is a lot of nepotism.