a unit of disabled and aged veterans
... that a unit of disabled and aged veterans garrisoned key parts of Great Britain in the 18th century?
... that <b id="mwVQ"><a href="./Corps_of_Invalids_(Great_Britain)" id="mwVg" rel="mw:WikiLink" title="Corps of Invalids (Great Britain)">a unit of disabled and aged veterans</a></b> garrisoned key parts of Great Britain in the 18th century?