It's the same meal.
The soldiers wish to depart and go home.
You are technically right, but it's not just because it's the same food. It's an elaborate symbolism based on the samurai send off and returning ceremonies. It's the same 3 food, but the order of the food being presented is different, giving it a different meaning.
The first time, the abalone comes before the chestnuts. This is the meal order for a send off ceremony, representing "strike (uchi = abalone), win (kachi = chestnuts), rejoice (yorokobu = konbu)"
But in this chapter, Ken brought the same food, but the chestnuts come first. This is how the meal is supposed to be served during the homecoming ceremony after a victorious battle. The meal now means "win, home (also read "uchi"), rejoice".
Ken probably wanted to say that they won already, so just get it over with and everyone can go home.