Look up fusillade in Wiktionary, the free dictionary.

A fusillade is the simultaneous and continuous firing of a group of firearms on command. It stems from the French word fusil, meaning firearm, and fusiller meaning to shoot.^[1]

In the context of military tactics, the term is generally used to refer to a type of organized and concentrated gunfire from a military unit armed with small arms, and initiated by a command from a commanding officer. The term can also be used as a verb, as in "to fusillade an enemy position". Suppressing fire (done in conjunction with fire and movement) is often in the form of a fusillade.

• Salvo or broadside refers to the simultaneous fire of naval artillery.
• Barrage or cannonade refers to a land-based artillery strike.
• Volley indicates a singular simultaneous discharge of a group of small arms, which is then followed by a short interval for reloading. The command to fire is re-issued before each individual volley to preserve organization. This was commonly used during the age of musketry and is still currently used in the form of the 3-volley salute.
• Execution by firing squad refers to the capital punishment by firearms. It is sometimes called "fusillading".^[2]

In non-military contexts, a fusillade is used to mean a sudden flurry or outburst of activity directed at something, such as "a fusillade of questions".^[3]

• Volley fire
• Volley gun - A firearm which discharges a group of barrels simultaneously.