Well with the UK being 3 hours behind Red Square. Watched it at 10:30pm tuesday evening.
General impression was its pretty good and although cramped by the 30 minute schedule - it did try to cover all aspects of the napoleonic re-enactment scene in Russia and the annual Borodino event in particular.
Opening scene was with Oleg Sokolov showing off his uniform and his Legion of honour and then moved on to do a case study of two other russian re-enactors as they prepared for this years battle of Borodino.
Anyway lets not bore you with the details but list the good and bad points.
Good points:
You cannot mention the Battle of Borodino in Russia without the epic film - War and Peace produced in the Soviet Union back in 1968 by Sergei Bondarchuk - it was and still is - the best War and Peace film ever - with the battle scenes with a cast of over 120,000 extras from the Soviet army - it rightfully won a US Acadamy award.
Anyway History Alive, Borodino includes clips from the film as well as some behind the scenes film shots of the battle scenes from War and Peace.

Filming includes work in a re-enactors supplier workshop in Russia making Shakos and brass plates. Say some of their products are made to order for the Swedish Royal Guards.
Camp scenes and battle.
Bad points:
Not much footage of the Battle re-enactment itself and perhaps tried to be all things to all people with cramming in the historical background, why people take up historical re-enactments, getting your gear together, etc - all within the 30 minute time slot.
Still all in all - ok for a documentary.
Finally don't worry if you missed it. As RT's documentaries are archieved, heres the link.
http://www.russiatoday.ru/documentary/release/815/video