Panzer IV top view with its stubby short-barrel large-caliber low-velocity gun firing 7.5cm Panzergranate (tank grenade, but meaning armor-piercing shell), Germans deemed this gun had sufficient firepower to defeat majority of British and French tanks in late-1930s, thus Heereswaffenamt (German Army Ordnance Bureau) declined upgrade to long barrel versions.

Three figures are positioned, top left is radio operator/bow machine gunner from 1.35th ACADEMY German Tank crewmen with semi-scratch built headphone set. Bottom left is driver holding his headphones (a plastic / photo-etched part from 1.35th DML German Tank crew kit). Right side standing upright is Tank Commander from 1.35 DML German Tank Crew kit.

Rollover : Spare tools were mounted on fenders, extra track bolted to turret roof. Circular plates on roof are ventilation shaft to flush out gun powder fumes and hatch opening to eject spent shell casing. Antenna located left of turret. Germans were the first to mount radios in major combat vehicles, thus enabling close coordination of combat forces during fluid battle conditions, aka turning "Fog of War" to their advantage.

This communication network was the true prowess of the German Blitzkrieg : close coordination of air force, armor, and mechanized troops assaulting a specific point in enemy defenses, achieve penetration, and rapid flanking moves to encircle and confuse enemy combat cohesion.Blitzkrieg - en.wikipedia.org/wiki/Blitzkrieg

Original German military term for mobility warfare was akin to Mobilität Kriegtaktik (mobility war tactic). After commencement of WW2 with rapid German victories in Europe by 1940, German Minister of Propaganda Joseph Goebbels coined the word Blitzkrieg (Lightning War) as a honorific and intimidating term to German allies and enemies alike. Note the term Propaganda referred to information tailored for public consumption via a centralized communication medium (ex. newspapers, radio), thus enabling the State to format public opinion.

After WW2, Propaganda possessed such a negative connotation that is never used as objective qualifier, thus governments changed their department names to Ministry of Information. Same socio-linguistic condition occurred in US with word Depression (economic downturn of growth), after great socio-economic shock of 1930s Great Depression, US public never used this word again and changed to the word Recession (recess of economic growth) Joseph Goebbels - en.wikipedia.org/wiki/Goebbels