The Dornier Do 335 'Pfeil' was a heavy fighter designed by the Dornier Flugzeugwerke during WW2. The design hearkens back to Dornier' extensive experience with push-pull engine layouts featured on many of their successful flying boats like the Do J or Do X.
The Mil Mi-28N Havoc is the Russian answer to the AH-64 Apache, a heavily armed attack helicopter that can carry a surprising amount of weaponry. It carries a 30 mm dual feed autocannon, with both Armor piercing sabot and High Explosive rounds, selectable by the gunner. On the pylons it can carry anything from unguided rockets to heat-seeking air-to-air missiles and anything in between. Developed in the early eighties as a variant to the venerable Mil Mi-24 Hind but without the troop carrying capacity and with a radar, making it All-Weather capable, much like the Apache.
The Jagdpanzer 38 (Sd.Kfz. 138/2), also known as the Hetzer was a light Tank Destroyer of the German Wehrmacht in World War Two. Featuring heavy frontal armor for a light tank, 60 mm sloped 60 degrees and armed with a 75 mm gun it was small, fast and easy to produce. Exactly what a country in a losing war would need. Based on the Czech Panzerkampfwagen 38(t) with modified running gear it also proved to be quite reliable, something that couldn't been said of it's brothers in arms: the Jagdpanther and Jagdtiger.