Most of the series past the first book is what I was referring to. It seemed like, for at least several books, there’s some big climax and he suddenly rediscovers some lost aspect of War Magic that saves the day, mostly unrelated to the rest of the book. It’s been over a decade since I read them though, so I might not be remembering it right.
Still enjoyed the series as a whole, despite a few things. Haven’t read sword of justice, but I might give it a try.