Lauder and Rattray remained as surgeons with the Jacobite army as Prince Charles Edward Stuart led it to Derby and then back to Scotland.
They arrived back in Edinburgh in May 1746 but were re-arrested on the orders of the Duke of Cumberland and held prisoner in London for seven months.
[7] As part of his plea for freedom Lauder made a lengthy representation detailing the care that he and Rattrray had provided for the wounded government troops after the battles of Prestonpans and Falkirk.
After Prestonpans he detailed his treatment of eight named officers and went on: Lauder returned to surgical practice in Edinburgh, training five more apprentices between 1751 and 1757.
[1] As deacon he was an ex officio member of the Edinburgh Town Council and spoke in defence of Stewart's efforts to raise militia to protect the city again the advancing Jacobite army in 1745.