20 or so years ago I looked at the Berwickshire Militia papers which are in the National Archives in Kew. Somebody had very helpfully written an account of the militia's peregrinations; unfortunately I only have to hand the details after Robert Cunningham joined up in December 1803, but I think somewhere I might have the earlier stuff, and if I find anything I will pass it on.
Regiment had been in Dundee since 23rd November. In December it left Dundee & reached Queensferry on 1 January 1804 en route to Port Seton Barracks in Prestonpans, where it arrived 4th January. It stayed there until 2nd July 1805, when the HQ was moved to Musselburgh.
Thereafter the Regiment moved as follows:
9 June 1807 to Haddington
15 June 1808 to Dumfries
March 1809 Glasgow
May ordered to Colchester; reached Edinburgh 31 May; reached Colchester mid-August (Robert promoted to Captain 4th August)
16 September Woodbridge
28 June 1811 embarked at Walton Ferry for Leith
18 July Haddington
3 September Dunbar (perhaps married Mary McLaren at around this time?)
1 December Edinburgh
18 Feb 1812 ordered to Paisley arriving 21st
8 March Ayr Barracks
2 May Irvine
16 May Ayr; his son Robert Oliver born there
15 August Paisley
January 1813 Kilmarnock
20 April ordered to Newcastle arriving late May; detachments to Tynemouth & Carlisle
15 September Tynemouth
10 April 1814 Newcastle
The Regiment was disembodied 20th August at Coldstream but Robert remained as Paymaster at the rank of Ensign from 21 August.
On 10 July 1815 the Regiment was re-embodied at Coldstream and continued:
August Queensberry House Barracks, Edinburgh
November Berwick on Tweed
7 February 1816 disembodied at Coldstream; Robert away recruiting much of the year.
Militia reassembled for training at Coldstream in 1820, 21, 25, and 1831 (& continued).