The Battle of Belchite on 18 June 1809 saw a Franco-Polish corps led by Louis Gabriel Suchet fight a small Spanish army under Joaquín Blake y Joyes.

Suchet's force won the battle when a lucky hit detonated a large part of the Spanish ammunition supply.

After Suchet ordered Laval to join him, he massed 12,000 infantry, 1,000 cavalry, and 12 artillery pieces for the battle.

General of Division Louis François Félix Musnier assaulted the Spanish left flank and began forcing it back into the town.

Just as Habert's attack got rolling, a French shell blew up an artillery caisson in the Spanish right rear.

The fire spread to some ammunition wagons and soon there was a titanic explosion as Blake's gunpowder supplies detonated.

Leaving Musnier's division to observe Blake's survivors, Suchet marched back to Zaragoza.