Modern retired soldiers traveled through the Long March battlefield and took the "Iron-Blooded War System" to possess the leader of the independent regiment of the Red Army. They combined modern military thinking with the advantages of the system to establish a solid base behind enemy lines, develop the economy, upgrade equipment, and expand the troops. They became the "sharp sword behind enemy lines" of the Red Army on the Long March. They not only helped the main force break through the blockade, but also created a new pattern of resistance behind enemy lines and realized the integration of personal values and revolutionary beliefs.
