Just to emphasise the point - there are few battle photos because there was not the technology available to carry a camera into battle. Cameras were the size of a large shoebox, made of wood and quite heavy. They also required a tripod to support them, not just due to the weight, but to support them and keep them still for a long exposure. The immediate development process also required a mobile lab wagon nearby. Since it was stationary for a long period, it would have presented a good target for sharpshooters or artillery.
View attachment 576918 Samuel Abbot Cooley, Union photographer. c 1864
Samuel Abbott Cooley, born on November 3, 1821, in Hartford, Connecticut, was a pioneering figure in Civil War photography. As the eldest child of Dr. Abiel
www.teachthecivilwar.com
Action/battle photos did not appear until the middle of WW1 - c 1916. A few british officers took the new Eastman coated celluloid roll (hence 'film') cameras to the front, but few have survived - or been published. Once again opportunity, exposure times and sensitivity limited their use. About 1916 we also get the first moving pictures from the front - and subject to the same limitations as the civil war cameramen - they were hand operated - no electric cameras yet!
BTW - Brady is often titled 'the first war photographer' which is not true. There was, however a photographer present during the Mexican-Amerocan War of 1847 who isn't named. He took daguerrotype photos (coated, polished metal sheet (silver plated copper) - positive mirror image) which are mostly post action or portraits. This is one of General Wool and staff in the Calle Real, Saltillo, Mexico, ca. 1847
View attachment 576919
Time has not been kind to it.
The distinction of 'first war photographer usually goes to Roger Fenton who accompanied British and French troops to the Crimean War (1854-56). Once again, the photos are post battle or posed portraits for the same reasons.