First machine gun was the Mp44. Also labled as the sturmgewehr by Adolf Hitler himself.
The Mp44 was used secretly behind Adolfs back after he denied production of them.
Adolf later found out his troops were using the Mp44 when he was making his rounds at a military camp, and he asked his men what they needed more of. And they replied more Mp44's. The word stermhewehr translates to storm rifle "To storm enemies position"
Other names for Mp44 are.. Mp43, Stg-44, and sturmgewehr