sentences:  The ability of clan chiefs to quickly mobilise large numbers of men derived from 'regalian rights' giving them wide-ranging powers over their clansmen and Lochiel's commitment obliged his tenants to take up arms.Those who did not were whipped or threatened with eviction, a process supervised by Archibald Cameron and allegedly a factor in his betrayal by Cameron clansmen when he returned to Scotland in March 1753.The Rebellion was launched at Glenfinnan on 19 August; the initial Jacobite force consisted of 900 to 1,100 men, mostly Camerons and MacDonalds, including Lochiel's nephew, Donald MacDonald of Kinlochmoidart (1705–1746).