As at 3059 the Lola III-class destroyer Rancor was a WarShip within the Clan Fire Mandrill touman and was serving as the CFM Rancor. The Rancor was one of only seven WarShips in the Fire Mandrill touman at this point and was serving alongside two sister vessels, the CFM Anathma and the CFM Rage. Following the Absorption of Kindraa Kline by Kindraa Mick-Kleese the Rancor would serve in the naval forces of the new Kindraa Kline-Mick-Kleese alongside the Potemkin-class cruiser CFM Fire-Eater, which was renamed to Jungle Heat by 3067.
In 3067 the Rancor acted as a transport vessel for the Clan Blood Spirit Iota Galaxy as Iota Galaxy slipped away from York in the wake of the destruction of the Clan Star Adder Vincent Mk. 42-class corvette CSA Vritra. The Rancor and other Fire Mandrill forces joined the Blood Spirit's Iota Galaxy in a highly successful attack against the Star Adder enclave on Tathis, netting a share of two full Trinaries of ProtoMechs and OmniMechs before parting ways with Iota Galaxy.
In late 3070 the Blood Spirits had benefitted from gaining a number of Clan Snow Raven enclaves across several worlds in exchange for JumpShips and DropShips which the Snow Raven's wanted to assist in their evacuation to the Outworlds Alliance. The Fire Mandrills joined with the Blood Spirits in a number of assaults to obtain territory and resources from other clans as various Trials of Possession were fought over holdings belonging to those Clans departing the Clan Homeworlds, as well as opportunistic attacks against Clan Star Adder.
One of the worlds on which the Blood Spirits either gained or were looking to gain a number of enclaves was Circe, and in the closing months of 3071 as the Blood Spirits gathered forces for another series of strikes into Star Adder territory the Star Adders moved a large body of forces to Circe, announcing a Trial of Possession for all of the enclaves on Circe that were, or had ever been, Snow Raven holdings. Two of the Snow Raven enclaves were still guarded by Snow Raven forces at this point; the Seventh Raven Regulars and the Second Raven Garrison Cluster were given a three-day grace period to prepare themselves before the Star Adders landed en masse and launched attacks. The Snow Ravens fought well, but couldn't prevail, leaving the enclaves in Star Adder hands.
Also on Circe at the time were three Galaxies of Blood Spirit forces - Omega, Sigma and Zeta. With the Star Adders and Blood Spirits squaring off against each other, Kindraa Mick-Kline-Kreese arrived to launch their own Trial for the two Raven enclaves just captured, led by the Fire Mandrill saKhan and accompanied by the Rancor. The Star Adders took exception and Khan Karianna Schmitt of the Blood Spirits argued at length for the Fire Mandrill forces to stay out of the battle; Kindraa Mick-Kline-Kreese, interpreting the wording of the Star Adder Trial of Possession differently to both the Star Adders and Blood Spirits, landed anyway and launched attacks on the two recently captured enclaves, only to find both themselves and the Blood Spirits declared dezgra by the Star Adders and the subject of a vicious counterattack. Khan Schmitt requested hegira after losing almost two Galaxies of troops, but the Star Adders continued to press the attack, and it was only the direct intervention of the Mick-Kline-Kreese task force that saw the few DropShips that managed to launch survive attacks from Star Adder AeroSpace Fighters. As it was, securing the evacuation of those forces that did escape inflicted a heavy price, including the loss of the Rancor.
- Field Manual: Crusader Clans, p. 44, "Naval Assets"
- Field Manual: Updates, p. 43, "Kindra Kline-Mick-Kleese"
- Wars of Reaving, p. 16, "The Wolf At The Door"
- Wars of Reaving, p. 54-55, "Fuel for the Blood Fued"