Tank Destroyers (TD)

Most players make LT, MT and HT during the game. Because of that I will make TD instead. I will put my TD in a forest where they are stealth and deal an additional 50% damage. Perfect to ambush your tanks, the day that happens, you'll discover what the use is of TD because your tanks will get wrecked. Just imagine I also make fortifications in that forest. It will be pretty bad for you'll get the picture. Especially when my attack bombers will patrol overhead and my SP artillery will move in to ranged attack.

Most players use a lot of tanks and it makes them very predictable. Good players will always have anti tank, tank destroyers, attack bombers and SP artillery and they will destroy you with easily. There are no bad units, only a lack of imagination

Tank destroyers are like the perfect defensive unit against tanks. They are vulnerable against infantry units so you can stack them together with militia. Militia are also good defensive units that are stealth and get extra bonuses in forests just like TD. But they counter unarmoured units. TD and militia is like the perfect ambush stack.

I agree. I once built an army mostly around heavy and medium tanks. Oh wow, it's a miracle that I made it far enough to negotiate peace. If you are looking for true "useless" units. I would probably say, in my opinion, the lvl 6 AA. The SP version is not only faster, but it performs significantly better, and is faster, meaning that you can't even argue that its good for core defense. It's just a lot more worth it.;