French General Guilin Laurent Bizanet had 2,700 soldiers in the garrison when, under cover of night and using local intelligence, Graham attacked. The French, however, were positioned well, and the population allied with them as they fought in the streets. The attacking British troops took heavy casualties. General Bizanet remained in control of Bergen op Zoom until a peace accord was signed.
One source named Bizanet as the governor and Jean-Jacques Ambert as the French commander. The 2,700-man French garrison sustained 500 killed and wounded and 100 captured during the action. Of the 4,000 troops in the British assault force, 2,100 were killed, wounded or captured. In addition to the units listed below, the source counted the 2nd Battalion of the 35th Foot in the assault force. The Guards Brigade consisted of three companies of the 1st Foot Guards and four companies each of the 2nd Foot Guards and 3rd Foot Guards, all from the 2nd Battalions of the regiments.