Figure 1. Steel Bunkers
Trench Bunkers:
The types of bunkers are concrete box is the name of the pillbox. Is fully concrete structural bunkers as shown in figure 2. Such concrete pillbox prevents the soldiers in the enemy explosive shells [3]. And also protect the severe weather conditions. And advance concrete trench shelter is provided with the sides bays of available rocket heavy range launches barrels inside and see out the shell muzzles into the trench concrete bunkers. Its will target attacked in anti-aircraft weapons systems. The foreside of the bunkers is provided fixed in the heavy machine guns or propellers mortars and from a dominate the shooting point. Back of the bunkers are usually commands of the actual line of control post and are it is fully controlled in Tactical operation commands (TOCs).