Plans over the growing importance of the army's reserve forces are due to be set out today by the UK Defence Secretary, Philip Hammond.
A white paper is expected to set out how the number of trained reservists will increase from 19,000 to 30,000 by 2018, as the number of regular troops is cut by 20,000 to 82,000.
There are around 2,000 Territorial Army personnel in Wales, and hundreds more TA soldiers are being recruited here each year.
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An Amber weather warning has been issued for Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Powys, Wrexham and Ceredigion.
Storm Doris will bring a squally band of rain at first with disruptive gales, especially further north.
Winds will strengthen to gale force by dawn, these severe across exposed coasts and hills particularly in the southwest.