The Times has an article on the high-tech weaponry reaching Ukraine and the problems associated with it. Some of the technology is striking, particularly the laser range finder, which works at night, uses GPS and provides targeting coordinates.
Mostly it's lack of trained personnel, but in the case of the range finder it's also the lack of a tripod and monitor, the auxiliary tools to make it work smoothly.
But what I found blog-worthy were the incidental mentions of the various silos which humans have erected.
For example, the long range howitzers the US just provided are built according to US measuring systems (our "imperial" system, aka inch/foot), not the metric system Ukraine and the rest of the world uses (every country except Liberia and Myamar), That means to perform maintenance and/or repair them the mechanic needs US tools, wrenches, not Ukrainian.
The range finder uses NATO grid coordinates, not the Soviet system Ukraine has, so a conversion is necessary.
Of course the howitzers and other technology come complete with manuals--the military is great on manuals. And everyone knows English, of course. (Apparently Google Translate has been helpful to break through this silo wall.)
Elsewhere in the media there's been another mention of the problem of different railroad gauges complicating the export of grain by rail through Poland.