Feldgendarmerie is a German military police, the genesis of which dates back to the Napoleonic wars. This formation was primarily responsible for keeping order in the ranks of its own army, prosecuting common crimes or offenses against discipline and regulations. Feldgendarmerie existed in the German army already during World War I, when it grew from 33 companies in 1914, to as many as 115 companies at the end of the war. After 1918, the formation was disbanded. However, shortly after Adolf Hitler and the Nazi regime took power in 1933, the Feldgendarmerie was restored in the German armed forces. Special schools of this formation were also established in Berlin and Potsdam, and the selection of candidates for formation was very strict and rigorous. During World War II, the Feldgendarmerie not only performed order functions in the German armed forces, but was responsible for maintaining German control over the occupied territories in Europe. It also participated in anti-sabotage and anti-partisan actions. It should also not be forgotten that the members of this formation also took part in crimes against humanity and participated in the crime of the Holocaust.
Panzergrenadier is a German term for a formation of panzer grenadiers, i.e. infantry units trained to fight in close cooperation with their own tanks. This term was officially used in 1942, when infantry divisions were renamed grenadier divisions and motorized infantry divisions into panzer grenadier divisions. It is worth adding that in the years 1937-1942, the Schützen Regiment was used to describe the infantry regiments serving in armored units. Theoretically, the basic equipment of armored grenadier divisions was to be armored half-tracked transporters, especially Sd.Kfz.251, but due to insufficient production, these infantry were often transported by trucks. As a standard, an armored grenadier division consisted of three infantry regiments, two battalions in each regiment and numerous support units, including anti-tank, anti-aircraft, sapper and communication units. Self-propelled guns, such as the StuG III, were often used in these formations. It is worth adding that the armored grenadier divisions were formed not only in the Wehrmacht, but also in the Waffen SS - for example the Totenkopf Division or the Hohenstaufen Division.