When it came time to go ashore the next day, Rajkumar would be red-eyed and Saya John fresh, heartily breakfasted and eager to get his cargo unloaded, to be on his way to the camp where he was headed. The first part of the journey was usually by ox-cart. They would breast rivers of mud as they went creaking towards the distant mountains. When everything went as planned, these journeys would end at some tiny inland hamlet, with a team of elephants waiting to relieve them of their cargo, leaving them free to turn back. But all too often they would arrive at their roadhead only to learn that the camp ahead could spare no elephants; that they would have to find their own porters to carry their cargo into the mountains. Then Rajkumar too had to yoke a basket to his back, a wickerwork pah with a deep cover and a forehead-strap. To his particular charge would fall the small bespoke luxuries that were specially ordered by the forest Assistants who ran the timber camps—cigars, bottles of whisky, tins of canned meat and sardines, once even a crystal decanter sent up by Rowe & Co., the big Rangoon department store.
I haven't understood the bold part of the sentence - To his particular charge would fall ...
What is the meaning of this?
My Guess -
His task was to deliver those goods.
Am I right? If not please tell me the meaning of that part.