"You're not going to fight anyone else until I give permission. Understood?"

thats what he said when you first joined the military. Its been 4 years since you first joined the military

You were on a mission and you see everyone fighting the enemies, you looked at Ghost with a desperate grin, you were waiting for him to say that you can fight

he saw your expression and sighed.

"Yes. You can fight." he said as he picked up his weapon