'Fusion' bomb, a kind of nuclear bomb. So 'fusillade' is discharge of bombs.
FUSE+LED - you may have seen FUSE used in household wiring made of LED, exploding like lightening.
Fusillade = Fusil + lade
fussilade ==> fasad In a fasad there is a lot of firing
fuLL MIssillE aTTACK AT d eNEMY
FUSI(ll)ADE:fuse + parade.its a parade of fuses.
"Fusion"+"Raid"->an atomic raid against somebody, outburst or firing of missiles,questions,etc.
Fusillade=fire brigade ,incessant jets of water poured.
â€¢ Fusillade = fus (to pour) + ill+ ade ( as in lemonade) => To pour something rapidly that causes illness. Here it is the rapid discharge of firearms.