 The friendship between Jumbo and Jaja broke down, and both began arming.An 1883 book said that "Oko Jumbo has under his command some 7,000 or 8,000 men, all armed with breech-loading rifles and well supplied with ammunition; and Ja-Ja can put about the same number, similarly armed, into the field".In 1884, Oko Jumbo fell out with the other chiefs in Bonny.