@Thelittlecord The infantry technology is more closer to the coldwar, while civilian technology, due to lack of wars, advanced more quicker than weapons. Though in some capacity, some advancement like "Armourers" will be quickly found, but not yet mass produced.
Also, I based that memoir from the Peninsular war during the Napoleonic wars. The memoir is during an attack by British forces in a French held fort of Badajoz. The memoir is found in the book "Voices from the peninsula".