4d) Sword wound - I'm impressed with it (8) ?C?M????
13a) Soap producer's incredible old wife (6) ????O?
16d) Phone round island to organise 17 (8) ????L?S?
17a) Soldiers recall game involving second-in-command (6) ?????S
19a) Bury note after treatment by doctor (6) ?N?O??
Cannot work out why 23d) Is Apse.
Thanks again to sandyRoe and retrocop, also to michaelmph for the explanation which I would never have worked out. Had Apse as part of church but couldn't parse it.