To begin, modern Serbia only has six army brigades. I have taken the liberty to field three more. Hope that's okay. Anyways, three infantry divisions will push into Kosovo in a coordinated attack to overwhelm Kosovar forces. From there a tank division will attempt to reach the Kosovar border with Greece. To the East of that, one infantry division will attempt to cut off an entire region. Drone warfare will be used HEAVILY in this offensive to minimize casualties, once a building is cleared by a drone, infantry moves in. With tanks it's complicated. Machine gunners use a heat seeking camera to see through a small camera mounted of the MG on the tank. From there they shoot. I really want to win this war.
Hope it's allowed to make plans like these.