Karius Expedition

*Log 1, Day 1
The Expedition
In less than one solar cycle, this great expedition will be under way. It was hastily brought together on short notice, for a mission of highest importance to the Swords of Sanghelios. 
I, fleet Master Yurin 'Kallach, have been tasked with leading a military expedition to the Ark. This task came from the Arbiter himself, and no expense has been spared. We have at lest 17 ship,s and two full legions, as well as a team of engineers, historians, analysts, and scientists. Our goal, at least officially, is to recover any useable element of the High Charity, especially the Assembly Forges, which are so dearly missed. 
However, there is another goal. Known only to myself, and a select number of individuals within the expedition, we have been sent to recover an artefact of highest importance. Recently, a comrade of ours, El'kas 'Vadum, has found something of great importance to the Sword. The information of his discovery is a secret to most, and even amongst this fleet, I am the only one privy to this. We discovered an ancient Sangheili warship, of monolithic proportions. To restore it to its full glory, with need artefacts called Keystones. Our mission is to recover a keystone referred to as the Pavise of Urs.
The fleet has now reached the edge of our solar system. We will not bathe in the red light of Urs for some time after this. But, we have steeled ourselves for the path ahead. The order has been given. We are now entering Slipspace. May the gods watch over us.
*Log 1, day 12
Pavise of Urs
This artefact we are hunting, is known to us as a Keystone. The nature of these ancient artefacts has been mostly lost to us, but not their significance. The team working on the ship discovered records to several of these, designed for the ship. We hunt the Pavise of Urs. 
Our scholars researched this term in great length, but found little in the way of useful information. It wasn't until a researcher found an old tome from the creation of the Covenant that we discovered what we sought. When construction of the profane city, High Charity, began, many relics were required to operate it. Most of these were of Forerunner origins. However, one relic was wrought not by the gods, but by Sangheili hands. The Pavise of Urs. By cross referencing this tome, with records from the ship, we discovered it was a shield generator designed for the ship, but the end of the war resulted in the relic falling into the perfidious hands of the San'Shyuum. That, is how it came to shield High Charity. 
Our engineers have hypothesised that they can adapt existing shield generators, should we fail, but the effort will take years, and lack the effect of the Pavise. As far as I care, we cannot fail.