The Royal Hospital in Chelsea was founded in 1692 to look after wounded and disabled soldiers. While there were some resident pensioners in their red tunics, the majority were out-pensioners although the pensions were administered from the Hospital. The Royal Hospital Kilmainham was established even earlier in 1681 and has records of 20 000 men from 1771-1821 (only ~60% were born in Ireland). Soldiers were eligible for a pension after 12 years of service.
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