him with the earldom of Essex, £10,000 a year in land, and whatever office
he might choose, but Fairfax was not to take up the king’s cause until the
Commonwealth was collapsing from within. Still only thirty-eight, he retired
to Nun Appleton and cultivated his garden, whose beauties Andrew Marvell,
his small daughter’s tutor, celebrated in a memorable poem.
Inevitably, Cromwell succeeded to his office of Lord General, and so
became commander-in-chief of all the parliament’s land forces for the first
time. He set out for Scotland on 28 June, the day on which he received his
formal commission. It was less than a month since he had arrived back in
London, and not many days since the king had set foot on Scottish soil. The
Scottish parliament had only just passed an act of levy for the recruiting of its
army by over 36,000 men, in addition to the few thousands that David Leslie
already had under arms. It was a huge target for a small nation, and nothing
like it was ever achieved. Cromwell’s attacking force consisted of eight regi-
ments apiece of cavalry and infantry, totalling over 16,000 men. By the time
it crossed the Tweed on 22 July, Leslie had already raised his army to almost
that number, and recruitment was still in full swing. Many of his levies were
still raw and untrained, but their morale was much higher than that of the last
Scottish army Cromwell had fought, and Leslie was a vastly better general
than Hamilton—probably the best that Cromwell was ever up against.
Though Leven, now about seventy, was still nominally commander-in-chief,
Leslie was in actual control of operations. For all the English parliament’s
superior resources, they were severely stretched, since fighting was still con-
tinuing in Ireland, where garrisons were making mounting demands on man-
power, and the danger of English royalists rising in response to the Scots’
efforts necessitated the upkeep of considerable forces at home. A very testing
time lay ahead for Cromwell. Faced with Leslie’s rapidly increasing strength,
he pressed to have his own army augmented to 25,000, but it was well into
1651 before it reached 20,000.
Leslie had fortified a line between Edinburgh and Leith, and his strategy
was to leave Cromwell free to advance to it unopposed, having stripped the
intervening territory of all provisions that his troops might need. This
scorched earth policy, coming on top of the impressment of all men of mili-
tary age, inflicted great hardship on the Lowlands countryfolk, and made
them doubly hostile to the invaders; nor were they mollified by Cromwell’s
repeated proclamations forbidding his men to lay hands on their persons or
property. He was forced to rely on seaborne supplies landed at Dunbar, but
these brought him less than he needed, and their transport from the coast was
impeded by persistently wet weather. Exposure to this caused much sickness
in his army, reducing it to not much more than half the strength of Leslie’s
constantly reinforced opposing force. Nevertheless he tried hard to bring the
Scots to battle. He advanced against Leslie’s lines on 29 July, bombarded
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