There were many reasons which compelled Wellington to refrain from prosecuting a vigorous pursuit after the decisive victory of Vittoria. The French were in possession of the two fortresses of Pampeluna and San Sebastian in the north, and they were far superior in numbers to the Allies in the south of the Peninsula. He pushed the enemy back slowly to the frontier, and at the same time he detached two of his own divisions, under Sir Thomas Graham, to reduce San Sebastian, whilst he entrusted the task of besieging Pampeluna to the Spaniards, resolving that, as soon as these two fortresses were in his possession, he would continue the work of expelling the French from the Peninsula. Emboldened by Lord Wellington's tactics, Soult turned and attacked the English at Roncesvalles and in the Maya Pass. At the latter engagement we were compelled to fall back, leaving some prisoners in the hands of the French; but reinforcements coming up, Wellington resumed the offensive, and by August 1 had once more driven the French to the north of the Pyrenees. The fighting during these few days was excessively severe, our casualties amounting to upwards of 4,000 of all ranks killed and wounded. CASUALTIES IN THE ACTIONS IN THE PYRENEES, JULY 25 TO AUGUST 2, 1813. +-------------------------+-----------+-----------+ | |_Officers._| _Men._ | | _Regiments._ +-----+-----+-----+-----+ | | K. | W. | K. | W. | +-------------------------+-----+-----+-----+-----+ |Royal Artillery | - | 1 | 1 | 19 | |2nd Queen's | - | 1 | 1 | 9 | |3rd Buffs | 1 | 1 | 3 | 27 | |6th Royal Warwicks | 1 | 7 | 14 | 140 | |7th Royal Fus. | 1 | 10 | 52 | 187 | |11th Devons | - | 4 | 7 | 62 | |20th Lancs Fusiliers | 3 | 17 | 38 | 189 | |23rd Royal Welsh Fus. | 3 | 8 | 23 | 85 | |24th S. Wales Borderers | - | - | - | 1 | |27th Royal Inniskillings | 3 | 11 | 58 | 228 | |28th Gloucester | 1 | 6 | 9 | 121 | |31st E. Surrey | - | 3 | 2 | 37 | |32nd Cornwall L.I. | - | 4 | 4 | 51 | |34th Border R. | 1 | 5 | 48 | 122 | |36th Worcesters | - | 3 | 8 | 35 | |39th Dorsets | 2 | 7 | 11 | 118 | |40th S. Lancs | 2 | 10 | 22 | 197 | |42nd Royal Highlanders | - | - | 4 | 26 | |45th Derbysh. | - | 1 | - | 7 | |48th N'amptons | 2 | 10 | 12 | 109 | |50th West Kent | 3 | 12 | 30 | 198 | |51st K.O.Y.L.I. | - | - | 7 | 62 | |53rd Shrops. L.I. | - | 1 | 1 | 20 | |57th Middlesex | - | 3 | 4 | 68 | |58th N'ampton | - | 6 | 10 | 61 | |60th Royal R. | 2 | 6 | 8 | 72 | |61st Gloucesters | - | 4 | 3 | 38 |