The two groups must co-exist with each other to be at maximum strength, and once the two cooperate, then they will be an unstoppable force to be reckoned with.
i think is the marines cause they have better uniforms they go into battle first and my brother is a marine in afghanistan
Your feelings are irrelevant. Neither is "better" than the other because they were not designed to compete, but to fulfill different types of mission requirements. Our armed forces are a team.