"Eventually, they combined the steam engine that powered the excavation drill, the mill's grinding wheel, and canvas to build the earliest rotorcraft. After successful test flights, this early version underwent centuries of improvements, evolving into versions with stronger power, faster speed, greater load capacity, and enhanced protection, and has remained in service to this day."
"The primary mission of the early Dwarf helicopters was to transport supplies and information between various fortresses and settlements. Their aerial advantage left the goblins and Rat People on the ground almost helpless against these flying machines. Their speed allowed supplies and messages—especially distress signals from besieged settlements—to be promptly delivered to other settlements capable of providing support, avoiding the tragic destiny of further territorial losses for the Dwarves."
