1down: medic fills latter two-thirds of chests and leaves high level station (7) u-d-c-s?
15 across: lack of resolution's first shown by sailors in 19(arctic) perhaps (8) -o-t-e-n?...
103 down: series of co-ordinated operations planned to achieve a specific goal (9) Surely the answer is campaign but I have an extra letter (d) at the end?! 12 down: -----Graves; antagonist in Die...