Complex sentence: These forces were commanded by Andranik Ozanian, and also Drastamat Kanayan, Hamazasp Srvandztyan, Arshak Gafavian, and Sargis Mehrabyan.
Split into simpler sentences: These forces were commanded by Andranik Ozanian. Other leaders included Drastamat Kanayan, Hamazasp Srvandztyan, Arshak Gafavian, and Sargis Mehrabyan.