It would actually be massively difficult to understate the importance of German direct and indirect aid to Ukraine’s ability to wage war since the second half of last year.

It’s a sort of low-intensity conflict (compared to what happens along the real front line). Force density per km is low and there is generally a large no-man’s land straddling the border. The Ukrainians present there are generally from the Border Guards, TDF battalions and units of the National Guard - in the past also units of the Ground Forces, but now it’s rarer; on the Russian side the lion’s share is held by conscripts, in addition to the Border Service and territorial battalions raised by the oblasts located along the border as well as some minor regular units.

There is occasional artillery shelling (sometimes even heavy one, in certain places) against villages or enemy accumulations, and use of FPV drones against the opponent’s positions and vehicles (usually trucks, but also excavators). The greatest danger is posed by sabotage and reconnaissance groups (DRGs), which enter inside the other country’s territory (thanks to Northern Ukraine being much more forested than the rest of the nation) and ambush enemy troops and/or vehicles carrying supplies or troops for rotations. These are the instances in which there are firefights, which is pretty rare otherwise. There is extensive use of reconnaissance with drones to monitor the enemy, and lately the Ukrainians have been fortifying the state border a lot, with a lot of work going on about 10 kms behind the border.

The border with Belarus, on the other hand, is very safe in the sense that there are no exchanges of fire. The Ukrainians are fortifying that area as well. The most “exciting” things that happen there are, as far as I know, yelling of homophobic slurs between the servicemen of the two countries and trolling stuff like the time the Ukrainians used quadcopters to drop potatoes on the Belarusian guards. Although there are also instances of respect, such as when an outpost of Belarusian border guards lowered its flag to honor Ukraine’s fallen soldiers on their day of remembrance.