Complex sentence: Whilst the "Drittchargierter" is in charge of the mail correspondence, finance and diplomacy, there is a "Function", that is often wrongly referred to as a "Charge (Chargierter)", the so called "Fuchsmajor".
Split into simpler sentences: Whilst the "Drittchargierter" is in charge of the mail correspondence, finance and diplomacy. Furthermore there is a "Function", that is often wrongly referred to as a "Charge (Chargierter)", the so called "Fuchsmajor".