A national-level military industrial chief trapped in a rift in future time and space, after self-sacrifice, his consciousness traveled back to 1944. He is bound to a trinity of "smelting furnace-drawing-production" military industry system. A large number of precise drawings of future individual weapons, anti-conventional reconnaissance equipment, and field line communication equipment are recorded in the system, but each drawing requires specific "cognitive materials" to be unlocked. These "materials" are not rare ores, but real terrain data that he has personally measured on this land, combat pain points gained from communicating with frontline soldiers, and low-end weapons that meet the drawing requirements that he has personally completed. What he built was not submachine guns and grenades, but ultrasonic eavesdroppers, individual radars, augmented reality tactical goggles, carbon fiber rope guns, portable plasma cutters... Let the enemies of 1944 experience the despair of being crushed by "technology that does not belong to this era" despite their inferior equipment.
