1. A method of detonating a high explosive (HE) projectile before it contacts a target comprising:1. firing a first high explosive incendiary (HEI) projectile at a target, said first projectile containing a first explosive which produces an electromagnetic radiation of predetermined frequency and magnitude during combustion;2. firing a second high explosive (HE) projectile at the target after said first high explosive incendiary (HEI) projectile is fired;3. impacting said first high explosive incendiary (HEI) projectile on said target, said first projectile containing fusing means for detonating said first explosive on impact; and4. detonating said second high explosive (HE) projectile by use of fusing means therein actuated solely by said electromagnetic radiation resulting from combustion of said first explosive on impact of said first high explosive incendiary (HEI) projectile on said target.