On Sunday the Workington Rifle Volunteers assembled in Portland-square, from where, under the command of LIEUTENANTS MANGER and MILBURN, and SERGT.-INSTRUCTOR MANN, they marched in procession to the parish church, attending divine service.  The preacher was the chaplain of the Company, the REV. H. E. CAMPBELL (rector).  The volunteers in their parade were headed by the Bugle Band.  There was a good muster.  The weather was fine.