The reason we keep losing, is because there is no proper goal (strategy) set at the beginning
Smart weapons, air superiority, and all the high tech in the world will NEVER win a war, for that you need feet and lots of them on the ground to take, overwhelm and hold that ground.
You spend hundreds of thousands of pounds on equipment that can be taken out by one man and a £20 RPG or needs a man walking in front sweeping a path for it.
Look at Afghanistan, you have lots of little enclaves while the rest of the Country is a no go, they have operations from what i see on the news, move in take an area then pullback because they never have had the manpower to hold it. You will never win anything and hold it when your Army manning would struggle to fill a football ground, let alone a Country.