Hello to all the usual suspects,
There is a sceince fiction trilogy, so far anyway,series currently out written by David Weber & John Ringo; "March Upcountry," "March to the Sea," and "March to the Stars,(recently purchased and not read yet)" which has some similarity. A prince and his Marine body guards get stranded on a low tech, hot, oceanic, island dotted world. The world's tech level varies, at least in the first two books, from spears, javelins, swords, to wheel lock guns. However, there pump technology is very advanced in comparison. The Prince's party has been using and improving the exisiting technology in various levels to preserve there high tech equipment. Oh, yeah they have a limited supply of food supplements, munitions, and power packs for the high tech gear. One more thing they are finding out that this same equipment has problems and malfunctions not known before being stranded. AS put in the book "Oh, joy."