With those precious twin lines of iron in danger, the Confederates left their desperately defended rifle pits and, under the starlight, made a forced march to Resaca by the short, direct road.

既然铁路面临被切断的危险，南部联盟军便立即离开死守的战壕，星夜抄近路向雷萨卡急速挺进。

So, Charles Frasier didn't experience the forced migration of the Cherokee people himself, but he writes as if he had, meaning the book seems to be written by someone who was on this forced march – this forced migration.

所以， 查尔斯弗雷泽本人并没有经历过切诺基人的被迫迁移，但他写得好像他经历过一样，这意味着这本书似乎是由经历过这种强迫行军的人写的——这种被迫迁移。