Half-rhyme: "body" and "lorry","life" and "side" ,"road" and "not".
The poet uses this in order to reiterate the mental torment of the soldier as he is unable to let go of the guilt that he carries, regardless of his desire to do so.
The caesura works alongside the half-rhyme by forcing the readers to pause within the lines of the poem which represents the soldiers' constant inability to move past the feelings of guilt every time he tries to do so, the overwhelming guilt 'stops' him and he is unable to get on with his life.