Complex sentence: Mohammed Beck Hadjetlaché (approx.1870-1929) was a Russian tsarist officer and later a terrorist, who fought with the White Guards against the Bolsheviks after the Russian Revolution.
Split into simpler sentences: Mohammed Beck Hadjetlaché (approx.1870-1929) was a Russian tsarist officer and later a terrorist. Hadjetlaché fought with the White Guards against the Bolsheviks after the Russian Revolution.