Responses

ALL of the war supplies, ships too, are provided via Amboia (Oz's country, and a merchant nation protected by every other country doing business with them). Spoiler:
In the novel, the big battle with Kemened, the catapults that nearly destroyed Leshak and his men, were Amboian. Amboia is super rich, technologically advanced, and hard to get to.... Also, Oz is super detached from real-world issues, so he might do anything, but the manhwa is kinda rushed and lacks nuance and detail.
What was the whole point of that? Cause Obviously we know who took him and now a war can start with that country (〜 ̄△ ̄)〜 this story just keeps introducing unnecessary plot lines, the amnesia, them disguising him as a woman only for it to be found out anyway. It doesn't matter if he escapes cause the prince will just start another war over it ( ̄へ ̄)