The book's premise is Samson is Private Hiram Galt, an alcoholic soldier serving the US Calvary in and near El Paso. El Paso to Chihuahua is hotly disputed between Mexico and the US. They like to shoot at each other. A lot. The battle could have been over rather easily if the two parties could have just agreed on a monetary transaction. Yet they didn't and thousands of soldiers died in the campaign. Samson has Galt's memories and he combines that with his own military experience in what amounts to a whole lot of nothing. Samson's superiors want him to carry military plans to another unit. To do this he must go through a territory that is disputed between two ranches. Barrington Taggart is a US rancher who ultimately is very wealthy, and in 1864 that means he has a lot of slaves. The other side of the mountain is Mexican land owner Rancho Bastida, who claims to have Spanish nobility and won't go down without a fight. The two ranchers actually get along fairly well but they don't cross each other. Yet.
Samson stops in at Taggart's place first. The old guy treats Samson extremely well with hot water and dinner. After the festivities Taggart breaks out some hanky-panky by bringing in a young slave woman and beating her to a pulp. Samson wants no part in this and he is commanded to leave at first light. That night he leaves the camp with another slave woman, Ysabel, who prompts the two of them to leave Taggart in a hurry. The land barren wants Ysabel back and heads out after the two with a crew of hardened men.
'Battle Cry' was released through Gold Eagle in 1992 and is the middle book of this time traveling men's action trilogy. Author John Barnes wrote all three of these and I'm not terribly certain if the idea was just the three books or if there were plans to do more with it. It has the ability to go further than a trilogy but Barnes may have become as bored as I have with the rather lackluster plots. This has a few surprises in it that I won't spoil here. The mystery is still fairly thick on why Samson is floating through time. Who is Master Xi? Can our protagonist actually die? Will he ever return home? We may never know. It's around 200 pages and makes for an easy read. It beats exercise or manual labor. Sometimes that's enough of an excuse to read anything.