despatched under Major-general Richard
Pigot, landed with them at Minorca, and
took part in the blockade of Valetta and reduction of Malta, remaining there in command of the regiment until the peace of
Amiens, when he went home on leave. On
the renewal of the war he rejoined the regiment at Malta, and became brevet colonel
October 1805. With his regiment he joined
the troops under Sir James Craig [q. v.], after
their withdrawal from Naples to Sicily ; was
appointed commander at Melazzo ; and commanded the advance of Sir John Stuart's
force at the landing in Calabria in June the
same year. He commanded the third brigade of the army at the battle of Maida 4 July 1806, and three days later marched with it into Lower Calabria, where he captured Scylla Castle after a twenty days' siege
(see Bunbury; Jones, Journals of Sieges,
vol. i.) On his return to Sicily he received the
local rank of brigadier-general there. In
February 1807 he went with Major-general
Alexander Mackenzie Fraser [q. v.] to Egypt,
where the two battalions of the 35th were
the first troops to land. He commanded the
troops sent against Alexandria, and attacked
and captured the western lines, taking many
guns, and driving the Turks within the walls.
It was not thought wise to attempt the interior line ; but two days afterwards the place
capitulated. Oswald was then sent against
Rosetta, and for fifteen days withstood
the repeated Turkish sorties ; but the Turks
having collected a very superior force, the
British troops were drawn off. Oswald
commanded in Alexandria until the expedition returned to Sicily, when Sir John Moore
appointed him commandant of Augusta. In
June 1808 his brigade rank was extended to
the Mediterranean generally ; and in October
following he was appointed to command a
large body of troops collected at Melazzo.
In 1809 he commanded the reserve in the
expedition to the coast of Italy (see Bunbury ; also Alison, Hist. of Europe) , which
ended in the capture of the islands of Ischia
and Procida ; of the latter he was made commandant. He returned to Sicily in July
1809, and in September was sent to the
Ionian Islands with an expeditionary force,
which seized Zante, Cephalonia, Ithaca, and
Cerigo. In March 1810, recognising the
danger to which the captured islands were
exposed from the neighbouring French garrison in Santa Maura, Oswald collected two
thousand troops, with which he landed there
on 23 March, driving the enemy behind their
lines, personally leading the troop that
stormed the strongest of the entrenchments,
and established a lodgment at two hundred
yards from the place, which capitulated after
eight days of open trenches. Oswald administered the civil and military government
of the captured islands ; and by his tact and
judgment confirmed the prepossessions of the
Greeks in favour of British rule, and established advantageous relations with the neighbouring Turkish pashas. On 11 Feb. 1811
he was appointed: colonel of the 1st Greek
light infantry, consisting mostly of Greek
brigands, who made very good soldiers. Oswald left the work of organisation to Richard Church [q. v.], to whom he gave all
the credit {English Hist Review, v. 28). Oswald returned home to lay before the government the importance of the Ionian Islands.
He was made a major-general 4 June 1811;
was appointed to the western district, and
commanded the troops in Bristol during the
subsequent riots there.
In August 1812 Oswald was appointed to the staff of the Peninsular army, which he joined on 22 Oct. 1812, during the retreat from Burgos. He was present with Lord Wellington in the cavalry affair of 23-4 Oct., and on 25 Oct. succeeded to the command of the fifth division during the absence of Sir John Leith [q. v.] At the head of the division he had some sharp fightingat Villa Muriel and the passage of the Carrion, and remained in charge of it until it went into winter quarters on the banks of the Douro (Gurwood, Wellington Desp. vi. 88, 133, 136). When the army took the field in May 1813, Oswald was again at the head of the 5th division until relieved by Leith. He commanded it in its difficult march through the north of Portugal and the Spanish provinces of Zamora, Leon,, and Palencia, drove the enemy back atOsmaon 17 June, and, passing through a mountainous country previously Considered impassable for troops with guns, joined Wellington at Vittoria on 20 June 1813. He was in command of the 5th division at the battle of Vittoria and the siege of St. Sebastian. Leith resumed command of the division two days previous to the assault on St. Sebastian on 31 Aug., Oswald reverting to the command of a brigade. Generals Leith, Oswald, and Robinson were all wounded on 31 Aug., and the command of the division devolved on Major-general Andrew Hay [q. v.]
The death of an elder brother, and the failing health of his father, to whose estates he had become heir, now recalled Oswald to England. He received the thanks of parliament for his services at Vittoria and St. Sebastian, and gold medals for Maida, Vittoria, and St. Sebastian. On the disbanding of the Greek light infantry Oswald was made colonel-commandant of one of the bat-
