It's from the Peninsular War (Napoleonic). It took place on 5th March, 1811 - rough guide here. Basically a joint Spanish and British force tired to suprise the French Commander around Cadiz (Marshal Victor). He however got word and set his own ambush. The Spanish abandoned the British as soon as the ambush was sprung so the mission objectives were never completed but the British inflicted heavy casualties on the French and were able to march out safely so considered it a victory anyway.