During the Second World War, the Luftwaffe developed a series of unguided rocket-propelled armor-piercing bombs.

PC from Panzersprengbombe Cylindrisch ("armor piercing cylindrical bomb") the number from the approximate weight of the bomb in kilograms, and Rs meaning rocket propelled.

The purpose of the rocket propulsion was to increase the terminal velocity of the bomb and aid penetration.

[1] The three types were similarly constructed with a warhead, spacer, and tail sections: The bombs are normally released from a minimum height of 1,200 m (4,000 ft).

The solid-rocket propellant burns for three seconds and produces a trail of flame 46 m (150 ft) long.