Mainly interested on how the Army works and functions. The regimental system, the laws and rules, uniforms and equipment. All the behind the scenes, that allows a unit to function. Also a soft spot for Welsh infantry battalions regular and TA plus the commando units as where my grandfathers fought.
There's plenty of this kind of business, but it's a bit scattered. Deep dives with search on specific terms should dredge up some of it. Welcome.