The fake Thomas Marik was a ComStar plant but stopped playing ball with the Word - so the Word needed to engineer a regime change to get a more pliable Captain General.
The Knights were Thomas Marik’s Personal unit - sworn soles to him, not the FWL, not the state, etc.
So when the Word engineered a change in government, the bulk of units initially went along with it - orders are orders, we are loyal to the state, not the person, etc.
Except the Knights.
That means you end up with a rogue unit on the capital that just happens to have elite skills and top of the line, brand new equipment.
You need to remove them ASAP if your change in government is to stick.
The Word used Corinne and her father effectively - seize power, grab Thomas Marik’s wife as a hostage, kill off the senate - boom. You’ve got all the cards.
Shame they didn’t get Tommy as well and we could have won the war. What?! Oh, I’ve said too much....