Solignac's Division took the field once more in the spring of 1811 for the relief of Almeida; at this time the battalion strength was 390 officers and men. Between 3 &amp; 5 May, heavy fighting took place at Fuentes de Oñoro and on the slopes in the vicinity. On the first day, Solignac's Division was held in reserve behind the centre-right of Massena's line and the Irish remained idle all day. On the 5th they were the general reserve to the flanking attack made on the British right wing and again were not engaged.