 The dynasty reached its apex under the successive reigns of Sultan Yusuf Mahamud Ibrahim, who successfully consolidated Gobroon power during the Bardera wars, and Sultan Ahmed Yusuf, who was considered to be the most powerful king in east Africa in his time.He managed to gather 20 thousand brave & strong Somali troops and invaded the Zanzibar island near Tanzania and he captured the Islands, slaughtered all the Arabic troops and freed the Bantu slaves and through his military dominance, Sultan Yusuf managed to exact tribute from the Omani king in the coastal town of Lamu.The Gobroon army numbered 20,000 men in times of peace, and could be raised to 50,000 troops in times of war.