Complex sentence: By the beginning of October the force was at Char Asiab, twelve miles from Kabul, where 8,000 Afghans were dug in, and it defeated the Afghan Army at Char Asiab on 6 October, 1879.
Split into simpler sentences: By the beginning of October the force was at Char Asiab, twelve miles from Kabul, where 8,000 Afghans were dug in. The Afghan Army was defeated at Char Asiab on 6 October, 1879.