The Ice Clan's Rise to Power

"What I remember about the Ice Clan's Rise to Power is… is how quiet it was. Cragger and Worriz had been killed, Gorzan and Rogon had been taken as prisoners of war, and we don't know where they are, and Laval, I was too late to save. He pursued that one Mammoth, and went inside the fort, and I was locked out. I waited just outside the fort I was locked out of, then after a while, I heard a siren, and I saw Mammoth Soldiers rushing out like it was doomsday, then I saw the fort collapse and explode. I was too late to save Laval. I have failed CHIMA. The Ice Clan was able to rise to power. We have been dragged into a dark time. King Lagravis was dying, so without Laval, I had to take the role of King. It's not a role I wanted but I claimed it to help CHIMA, for they need a King to lead the way. No matter how hard we, the people of CHIMA persevere, I fear we may not win. The Ice Clan has already slammed their cold fists down on CHIMA. We just don't realize it." 
- Duke Lavertus, 10,012 years AGI*
The Ice Clan rose to power half way through the Fire and Ice Wars. Cragger and Worriz had been eliminated, and Gorzan and Rogon had been taken in as prisoners, yet to be executed should they refuse to join the Ice Clan. Laval had been inside the fort as it exploded, so it would be taken that Laval died in there. Lagravis, the King of CHIMA, passes away and Lavertus has to take the role of King to help CHIMA persevere in their trying times.
Strainor and Mustafa Khan of the Ice Clan have been killed in the early Fire and Ice Wars, however. When Lord Fangar had received the hostages from General Erut, he considered persuading Gorzan and Rogon into becoming Recruits of the Ice Clan, and if they are impressive enough in the field of combat, then Fangar would consider them replacements for Norbad Strainor and Mustafa Khan. Fangar tested Gorzans' abilities in his personal arena, and Gorzan failed by Fangar's sword to his neck. Rogon, was stubborn and insolent, and thus, was the test host for the swarm bore launcher that Mottrot and Vornon had recently invented. 
The Ice Clan has a code name for the point of their conquest in which their victory is imminent, known as Requiem. The Ice Clan has considered that they have reached Requiem at this point. 
Stealthor then unleashes the Ice Clan's greatest weapon, the Cave Bears.
*AGI = After the Great Illumination