The Abkhazian capital indeed has two names. The Abkhazians themselves call it Aqwa, although the Georgians centuries ago named this city Tskhumi which underwent a little transformation (Sokhumi/Sukhumi) during the long-time Turkish rule. At any rate, despite a large number of Russians writing here, this is still an English-language portal which apparently is being subjected to a well-orchestrated and politically-motivated campaign aimed at deliberately deranging the names of cities on the Russian-conquered territories. If it's not so, since when 'Tskhinval' has become 'a Russian variant'?!
Regiment is an equivalent of brigade and in ordinary case consists of four battalions. Your phrase 'Chechen regiments' implies that at least two regiments - up to three thousand Chechen servicemen - could have taken part in 2008 war. While I'm not inclined to diminish their role in final outcome, merely I've not come across any information which would prove it correct. Battalion 'Vostok' led by Yamadayev - the one who was killed recently in Dubai but who a few days later resurrected
Russia as a colonial master has made the Chechens and Georgians kill each other in the past. The latter helped the Czarist forces finish off with the Imam Shamil-led resistance while the former actively fought in Abkhazia a century later alongside with Russia. Yet, the plan to sow ethnic hatred between them is going to result in complete failure.

