More than 3,000 troops including British and French paratroopers are taking part in a joint training exercise in the Galloway Forest near Dalbeattie.
It will involve a parachute drop in the Braid Fell area, as well as a substantial amount of fixed wing and helicopter flying.
Routine movement of MOD vehicles can be expected between Galloway Forest and the north of Dalbeattie, and convoys may be present on the A75.
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High pressure brings a mainly dry spell. Winds become lighter. Feeling warmer in any sunshine during Wednesday
The second of our special reports looks at the history of the Borders Railway - starting with the closure of the Waverley Line in 1969.
Predominantly dry over the coming few days with variable cloud & some sunshine. Cool nights but daytime temperatures recovering a little