Which preposition to use with scarpe

on Occurrences 1%

The pa was on the summit of an abrupt hill, steep and scarped on two sides, narrowing to a razor-backed ridge in the rear.

to Occurrences 1%

For several days after the first dash on Monday morning, April 9, the British tore through the German defenses on an extended front north and south of Arras, from the north bank of the River Scarpe to the German trench system just south of Loos, and straddled the iron line of Hindenburg by April 13 as far as a point seven miles southeast of Arras.

toward Occurrences 1%

Another sector was added to the north end of the battle line on the eighth day, March 28, when the Germans attacked heavily on both sides of the River Scarpe toward Arras.

Which preposition to use with  scarpe