The last Jacobite rising occurred in 1745, when "Bonnie Prince Charlie" attempted to seize the British throne, aided by rebellious Scottish Highlanders. In the aftermath of this unsuccessful coup, the Highlands were extensively militarised by the government, and Adam's Ordnance Board work consequently multiplied. He and his sons carried out works at Fort Augustus, Fort William, Carlisle, and the castles of Dumbarton, Stirling, Edinburgh, Blackness, and Duart. He was engaged in 1747 to provide the mason work and brickwork for Fort George near Inverness, although the project only began shortly before Adam's death. Every summer until 1760, one of his sons spent the summer at Fort George, supervising the works under Colonel Skinner, the chief engineer for North Britain.