Barry only needs another year before he can return back into the Hunter Department. If that happens, he has a higher chance of reaching the Lord Rank
But now, Barry would enter the Military Department and participate in a war
Don't get him wrong, Barry is far from being afraid even if the war would be an extremely dangerous one
Only in the face of immense danger would it be easier for Barry to advance in ranks. However, the Department he hates the most is the Military
In the Military, strength is almost nothing. The most important thing is one's position!
The people at a higher position can order those lower than them. Low-level members always need to obey their superiors even if they know that the orders were wrong
This was for the so-called 'discipline' and 'unity' wherein the chain of command cannot be broken
Barry himself is not young anymore and he has quite a lot of experience. He knew how rotten the Military can be