So, the thing is that this world (let's call it World A) is shared between several sapient races, some smaller (kobolds), some bigger (dragons, gryphons, minotaurs, centaurs) than humans. Storywise, humans are dominant because numbers, but other races are also capable of combat and are used in warfare, usually along with humans. Their roles vary. For dragons and gryphons, it's usually the same as for SEALs and marines, though they're also often put on guard duty at outposts.
The size range isn't that terrible; dragons are roughly the size of large draft horses, gryphons are closer to various sub-species of brown bears, while kobolds are about a meter tall. Still, it's going to affect combat. Dragons and gryphons are agile, flexible, have keen senses, and should be able to carry bigger guns (such as an Mk 19 grenade launcher) or help their human squads move on difficult terrain.
Still, creatures that move on four legs when on the ground, like dragons and gryphons, are going to have an extra-difficult time with not being sniper magnets, due to their sizable hitbox.
There is only so much shielding technology can do. Even though dragons have protective osteoderms around their vital organs that are strong enough to offer level 4 protection, there will always be guns that can seriously injure them with one hit, even if they're wearing armor on top of their osteoderms.
Also, asymmetrical warfare is present, but only weakly, nowhere near like with ISIS vs Russia/America.
How could dragons, gryphons and their like combat their (compared to humans) increased visibility and size on the ground?