Abstract: A command fuzing system for use in conjunction with small, rapid-fire protiles. A narrow-beam radar transmitter, mounted on the weapon, transmits radar pulses along the trajectory of the projectiles. Each projectile contains a small horn antenna, a detector responsive to the radar pulses, an amplifier and a counter which is advanced with the receipt of each pulse. Upon receipt of a predetermined number of pulses, the counter triggers an SCR switch to cause detonation of the projectile in a well known manner. By adjusting the pulse rate of the radar transmitter the operator of the weapon can control the number of pulses reaching each projectile in a given time period, thereby controlling the point along the trajectory at which detonation occurs.