Such a department usually includes all branches of the military, and is usually controlled by a Defence Minister, Minister of Defence, or Secretary of Defense. Wikipedia* On the C-SPAN Networks ...

a page on the Defense Department’s website celebrated Pfc. Ira Hayes, a Pima Indian who was one of the six Marines photographed hoisting a U.S. flag on Iwo Jima in 1945, as an emblem of the ...