The E series of the BF 109 fighter was primarily an improvement in engine power over the preceding series. The Daimler-Benz DB601A increased the power available by an additional 50%, but it required a redesign of the airframe to move the radiators from the front to the underside of the wing roots.

The E-4 variant of spring 1940 was the first to be armed with the new MG FF/M 20mm cannon that was designed to use the new Minengeschoß ammunition. This new projectile made use of the same drawing production process used for cartridge cases to make strong thin walls, and thus could carry triple the explosive filling compared to the rather pathetic standard HE shell.

The principle difference between the E-4 and our current E-7 is the lack of mounting and plumbing to use an external tank. This meant that the E-4 and its older cousins had only limited endurance, and was the type's biggest weakness in the Invasion of France and especially the following Battle of Britain. Our E-4 was modified from AceS, Toddel and Rad's E-7 by Matt Baker, Stubbfan and Kraetzer.

The SdKfz 251 armoured halftrack is not a new vehicle to FH2, present already in the Ausführungs C and D. The earlier Ausf. B is not fundamentally much different from the later C, sharing the same basic construction methods and parts. The most obvious difference is the two part frontal armour plate, which was later simplified to ease manufacture.

The SdKfz 251 was not a common vehicle in France, with only a handful of the panzer divisions being partially equipped. Ours was modified by Matt Baker from K96's original Ausf. C.

Messerschmitt BF 109E-4
Class: Fighter
Speed: 535 km/h
Armament:
2 x MG FF
2 x MG 17

SdKfz 251/1 Ausf. B "Hanomag"
Class: APC
Speed: 52 km/h
Armament:
2 x 7.92mm MG34

还在更新，十多年了。