several detached corps to concentrate on the river Ilo, under Colonel Santos la Hera, to resist the invasion. Miller, who was kept well informed by Portocarrero and Landa, started to prevent this concentration of the Royalists. He reached the river Samba on the 20th May, and at midnight, after a forced march of eighteen hours across a desert, reached the Ilo, opposite to the village of Mirave, where La Hera was encamped. An advanced picket gave the alarm, but two Englishmen, named Hill and Hunn, with twenty men, forded the river, and drew off the attention of the enemy, while Miller and the bulk of his force crossed unmolested in the darkness. At daybreak Miller attacked the village, and carried it after a sharp struggle, in which young Welsh, Cochrane's physician, who accompanied the expedition as a volunteer, was killed.
Hardly had the last fugitives of La Hera's party disappeared when Colonel Rivero came in sight, with another detachment from Puno, mounted on mules. A few rockets put them to flight.
The same afternoon Miller started in pursuit, and on the 24th reached the city of Moquegua, where Portocarrero was Deputy Governor, who at once passed over to him. The remains of La Hera's force had been overtaken and made prisoners by Soler, and on the 26th Miller overtook Rivero, and either killed or made prisoners nearly all his party. In fifteen days from landing Miller with his small force had put more then a thousand of the enemy hors de combat, and Cochrane wrote to San Martin, telling him that in eight days more they would have Arequipa.
La Hera, having met in his flight with other parties on the march to join him, now turned upon Miller and tried to cut off his retreat, but Miller reached Tacna in safety, and was there met by the news of the armistice of Punchauca.
During the suspension of hostilities Miller employed his time in drilling his raw troops, while Ramirez collected
