After the Battle of the Alma, the Armies marched towards Sebastopol; moving round the East side, they invested the fortress on the South and East Sides, the British on the right and the French on the left. It was therefore necessary to move the main bases of both Armies; the French moved theirs to Kameisch Bay, which was very convenient for them; the British had to be content with the small harbour of Balaclava, which was to their left rear and not covered by their siege line