26 August 1813 – North Spain – Day 1

British attack Pisuerga
1 British army – attack Pisuerga
2 British army – observe border
3 British army – observe border

French win battle of Pisuerga
10 French army – defend Pisuerga
11 French army – hold Santa Maria 12 French army – hold Cuellar
12 French army – hold Cuellar