The minitanks are coming back.

“Meet FireAnt: US firm unveils mini ‘tank-killer’ robot built to hunt heavy armor” (MSN)

Have you ever heard of TK and TKS tankettes? Those little reconnaissance vehicles used by the Polish army in 1939. They were helpless against the Panzer IV. The reason for that was the lack of lightweight and effective anti-tank weapons. The 30-40 mm gun with a hollow grenade (HEAT). Or a bazooka could make those systems a little bit more effective than they were. 

There are models. If those small vehicles can carry anti-tank weapons. Like heavy bazookas or modern anti-tank missiles, they could be more useful as support vehicles. In some models. Those TKS vehicles’ modern variants. Can operate as the unmanned ground vehicles (UGV) that can be wire- or AI-guided systems. 

Unmanned ground vehicles (UGVs) can make reconnaissance missions. Or they can shoot enemies. Those systems can also. Make kamikaze missions. Like other drones. Other drones or manned systems can also transport those UGV-drones to their operational area. And they can attack the main battle tanks, or if they are released to places like airbases, those systems can move. In places. Like aircraft bunkers. The kamikaze version can also carry anti-tank missiles. And they can be dangerous to any targets. There are also scenarios introduced that UGVs can look like. Even a limousine. 

“TK prototype nr. 6007 in its final form with roof hatches open. According to the TK-3 standard (it might be a rebuilt TK-2). Note a horizontal angle of MG fire and two side observation hatches, present in early series TK-3 only.” (Wikipedia,. TKS)

https://www.youtube.com/watch?v=XXexKLje4N4

“German demolition vehicles "Goliath" E-Motor” (Wikipedia, Goliath tracked mine)

“A Gladiator tactical unmanned ground vehicle” (Wikipedia, Unmanned ground vehicle)

Those systems can slip in places like drug cartel bosses' mansions. And then detonate themselves there. In some versions. Some presidents’ personal limousine. Or its copy is loaded with a neutron bomb. And then detonate in some airbases. These kinds of systems are always possible to make. The worst version of those robot systems can be trucks. That drive to the military base. And detonate themselves. There was once a suspicion that Ukrainians used a remotely controlled truck to detonate the bridge that connects the Crimean peninsula to Russia. 

The idea of ground-moving UGV is not new. The first versions of those systems were operated by the German military in 1944. Those ground-moving, remotely detonated mines called “Goliaths”  successfully operated in the Warsaw street fights during the Warsaw Uprising. The UGV is basically a car bomb that can operate in many areas. The flexibility of those systems makes them very dangerous. The large-sized UGV drone can release other drones from its cargo systems. So, when some guards stop that vehicle at the gates, drone swarms can be released. 

The human-shaped robots that mimic humans make those systems even harder to control. We all heard about the ultra-realistic baby dolls. That looks like real human babies. But there is a possibility of creating a human-shaped robot. That looks like Vladimir Putin. The robot can walk into the headquarters and then detonate itself. The robot can also sit in the limousine's backseat. When that remotely controlled system travels in the military base. Those things are real threats in modern times. 

https://www.msn.com/en-us/news/technology/meet-fireant-us-firm-unveils-mini-tank-killer-robot-built-to-hunt-heavy-armor/ar-AA1PQpqc

https://en.wikipedia.org/wiki/Goliath_tracked_mine

https://en.wikipedia.org/wiki/TKS

https://en.wikipedia.org/wiki/Unmanned_ground_vehicle