The StuG III (Sturmgeschutz III) was a German armored gun from the Second World War. The first prototypes of the vehicle were created in 1937, and serial production continued in the period 1940-1945, ending with the production of about 10,300 vehicles. The StuG III in the E version was powered by a single Maybach HL 120 TRM engine with 300 hp. It was armed (version E) with a 75mm short-barreled cannon. and 1 MG34 machine gun cal. 7.92 mm.
StuG III was created as a result of an initiative taken by Erich von Manstein, who in a letter to general Beck in 1935 signaled the need to create assault artillery for the advancing infantry within the mechanized units of the Wehrmacht. Ultimately, the order to design a new vehicle was commissioned to Daimler-Benz, which in turn used the chassis of the PzKpfw III Ausf. B. Several versions of the StuG III gun were created during series production. Chronologically, the first was the A version, armed with the 75mm Stuk 37 L / 24 gun and based on the chassis of the PzKpfw III Ausf tanks. F and G and produced from the beginning of 1940. Shortly after, version B was created – the first one to be produced on a large scale, which differed only slightly from the version A.
The M109 is an American 155 mm turreted self-propelled howitzer, first introduced in the early 1960s to replace the M44. It has been upgraded a number of times, most recently to the M109A7. The M109 family is the most common Western indirect-fire support weapon of maneuver brigades of armored and mechanized infantry divisions.