Deployment
Hiding the damaged wall was easy since Khan often was the first to leave his room. A few Thilku spotted the cracks but paid them no heed due to the unique role Khan had to play in that environment.
However, a worrying pattern started after the first night. Khan appeared distracted during social gatherings, meetings, and feasts. He seemed conflicted about something but also unapproachable.
Naoo or the other Thilku would have normally mentioned something, but Khan's performance on the battlefield never disappointed. He was the sharpest, fastest, and deadliest soldier on the field, granting him freedoms other aliens couldn't claim.
The battlefield itself didn't present anything new in those days. The great mobilization witnessed during the first night was the worst the Thilku trenches usually experienced, and Khan had to face it a few more times.