Although it was an experimental type of weapon with self-propelled rocket ammunition. Some weapon of this type appeared abandoned in the final battle in Berlin, at the end of WWII.

"Soldier with the weapon on his shoulder"

-Clearly it was an anti-aircraft weapon, a kind of "bazooka" of multiple guns of smaller size. So it was an AAA.

"Fliegerfaust aspect"

"Ammunition"

-The charges were in a bunch of rocket-bullets joined by a wiring for firing.

"Ammunition with explosive and propulsion charge"

From Appendix 12: We found an image of Fliegerfaust products that we show below.

"Fliegerfaust products"