army has the funding to make everyone a gear queer. the corps is always innovating though, a lot of improvements come through the corps doing more with less and finding better ways to work what we've got.
marines were using camo uniforms in wwii and pioneered the concept of close air support during the banana wars after wwi. we had the pacific campaign already planned out before wwii even started. but if it wasnt for the cash cow of the army, we wouldnt be able to bring a lot of our concepts and tactics to fruition.