Peninsular War happened in 1812.

The Peninsular War brought suspicion and planted seeds of discord between the neighboring communities.

The 19th Lancers did not exist until 1860 so played no part in the Peninsular War. There have been medals for sale on e-bay purporting to be for this Regt during the Peninsular War. They are all fake.

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Peninsular veteran has written:

'Memoirs of a sergeant late in the Forty-Third Light Infantry Regiment : previously to and during the Peninsular War : including an account of his conversion from Popery to the Protestant religion' -- subject(s): Peninsular War, 1807-1814, Personal narratives