sentences:  After the 1715 Rising, a line of forts was built along what is now the Caledonian Canal, the most important being Fort George, Inverness, Fort Augustus and Fort William.The garrisons were reinforced when the 1745 Rising began but the defences had been neglected and were in a poor state.It was not until the Jacobites retreated from Stirling Castle in February 1746 that a serious effort was made to capture them.