France 1944, US infantry and German POW's march past the remains of a US M3A1 torn apart. The M3A1 was a M3 with the improved M49 machine gun ring mount over the right hand front seat. All M3 halftracks were continually upgraded to M3A1 versions throughout the course of the war.
Nebelwerfer - "Smoke Mortar" The Nebelwerfer was originally developed as a method of delivering poison gas and smoke shells, it was developed for the "Nebeltruppen" or smoke troops, this was all part of a disinformation strategy to fool the League of Nations. In combat it was given the nickname by the allies of "Moaning Minnie" or "Screaming Mimi", one of it's main disadvantages was the huge plumes of smoke left behind pinpointing the firing location, once fired the crew must relocate almost immediately to avoid devastating counter artillery fire. https://en.wikipedia.org/wiki/Nebelwerfer#Comparable_systems
From the WWII firepower documentary "How good is a gun?" this gif shows an American five man crew loading and firing their mortar.