I agree to the other reviewers. Good start for a melody, but you need a beat that makes you move your feet in exactly this marching rythm.
No way, so lifeless.
No fucking way in hell a marching band or anyone serious would play this. It's beyond simple, did you even try? You've got a basic hook surrounded by nothing but a basic measure. Very discouraging and like said before bland.
It sounds quite good
A little bit bland, if anything. Bring in some drums or something perhaps? I don't know. But it's a good start for a melody.