Rear guard

Definition and stakes

Portrait of Mary Johnston Mary Johnston,  Cease firing

“ Cavalry rode before, cavalry guarded the rear, but few were the actual guards in among or alongside the wagons. Vanguard and rear guard needed every unhurt man. For miles there were, in sum, only the wounded, the jaded wagon horses, the wagon drivers with drawn faces. Orders were for no pausing, no halts. If a wagon became disabled, draw it out of the road and leave it! There must be rapid travelling through the night. Even so, if the blue were alert, the blue might strike the train before day. ”
Source: Gutenberg

James A. Moss,  Manual of Military Training

“ The distance of a rear guard from the main body and its formation are similar to those of an advance guard. The elements corresponding to the advance cavalry, the point, and the advance party of an advance guard are termed the rear cavalry, rear point and rear party, respectively. The support and reserve retain the same designations.
A rear guard formed during an engagement to cover the withdrawal or retreat of the main body, may first be compelled to take up a defensive position behind which the main body forms up and moves off.
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Source: Gutenberg

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