...ss in his march southward. [Cache river heads at Chalk bluff, near the Missouri line, and runs south, parallel with White and Black rivers, not far to the east of them.] Rust's force was increased at Des Arc by the addition of Col. D. McRae's regiment of Arkansas infantry, which that indomitable officer had marched to him at the rate of 25 miles a day, arming his men by impressments and purchases on the ...