During his rule, Uthman's military-style was more autonomical in nature as he delegated much military authority to his trusted kinsmen—e.g., Abd Allah ibn Amir, Mu'awiya I and Abd Allah ibn Sa'd—unlike Umar's more centralized policy. Consequently, this more independent policy allowed more expansion until Sindh, in modern Pakistan, which had not been touched during the tenure of Umar.History of the Prophets and Kings (Tarikh al-Tabari) Vol. 04 The Ancient Kingdoms: pg:183. The conquest of Armenia had begun by the 640s.
During his rule, Uthman's military-style was more autonomical in nature as he delegated much military authority to his trusted kinsmen—e.g., Abd Allah ibn Amir, Mu'awiya I and Abd Allah ibn Sa'd—unlike Umar's more centralized policy. Consequently, this more independent policy allowed more expansion until Sindh, in modern Pakistan, which had not been touched during the tenure of Umar.History of the Prophets and Kings (Tarikh al-Tabari) Vol. 04 The Ancient Kingdoms: pg:183 The conquest of Armenia had begun by the 640s.