It has also recently been argued, by Tom Reilly in "Cromwell, an Honourable Enemy", that what happened at Drogheda and Wexford was not unusually severe by the standards of 17th century siege warfare, in which the garrisons of towns taken by storm were routinely killed to discourage resistance in the future. John Morrill commented, "A major attempt at rehabilitation was attempted by Tom Reilly, Cromwell: An Honourable Enemy (London, 1999) but this has been largely rejected by other scholars." Morrill himself argued, that what happened at Drogheda, "was without straightforward parallel in 17th century British or Irish history... So the Drogheda massacre does stand out for its mercilessness, for its combination of ruthlessness and calculation, for its combination of hot- and cold-bloodiness". Moreover, historians critical of Cromwell point out that at the time the killings at Drogheda and Wexford were considered atrocities. They cite such sources as Edmund Ludlow, the Parliamentarian commander in Ireland after Ireton's death, who wrote that the tactics used by Cromwell at Drogheda showed "extraordinary severity".