This is the authoritative first-person account of the 54th Massachusetts regiment from the Civil War (featured in the movie Glory). I was reading it for research for a novel that I'm writing, but it's also an interesting story to anyone interested in Civil War history. The 54th is known for its dramatic (failed) charge at Battery Wagner on Morris Island, as well as for being one of the first black regiments in the war. They differed from the earliest regiments (like the First South Carolina Volunteers), in that most of the soldiers in the 54th were free men. They faced great discrimination with continued fortitude--as a group, they refused to accept less pay than white soldiers, and went more than a year without pay, while their families back home suffered.
In terms of military action, they weren't involved in many important battles beyond the attack on Battery Wagner, and shortly after that attack, found themselves filling sandbags and digging ditches during the siege of Wagner, for almost two months (white troops were much more likely to be given guard duty, while black soldiers were more often put to hard physical labor in the harsh summer heat).
Because they didn't see much big action later, the narrative of the book slows down quite a bit in the second half, and Emilio ends up listing lots of promotions. If you're looking for a well-written narrative about black soldiers in the Civil War, you're better off reading Higginson's Army Life in a Black Regiment. But if you want a first-hand look at the 54th Massachusetts, this one's worth a read.