James Lumber born 7 June 1823 Woolwich Barracks, Kent served with the Royal Artillery in Malta in the 1850's and after returning to the UK had postings in West Greenock and Ardersier in Scotland before reaching the rank of Major, Coastal Brigade of Artillery 7 June 1878.
Is anyone able to confirm whether the pictured men's uniforms are consistent with their supposed ranks and service histories?
Although this was posted in 2006, I don't believe anyone answer the query about the uniforms?
Addressing the second photo:
The answer critically depends on when James retired - you don't say - and when the photo was taken. There is clearly a rank badge of a crown on his uniform collar What that means depends on the date.
From 1855 to 1880 the rank badge for a major was a star, with two rows of lace, while that for a lt. colonel was a crown. A lieutenant had a star, with one row of lace.
From April 1880 the crown became the rank badge of a major, while a lt. colonel became a crown plus star.
So, if taken before April 1880, the photo is of a lt. colonel, or lieutenant, depending on number of rows of lace (not clear). If taken after April, 1880, then shows James as a Major - most likely.
https://en.wikipedia.org/wiki/British_Army_officer_rank_insignia