After the previous novel, in which most of the regular characters were badly wounded, I half expected this one to pick up with almost all-new characters. But it didn't. The action has moved to Bougainville, the next island to be taken from the Japanese. The various wounded men have healed up and rejoined the recon platoon. One of them, Bannon, is having severe headaches after a steel plate was put in his head to replace part of his skull. There are hints that he's on his way to becoming a morphine addict, which I think will play out in later novels.
The action in this one is typically strong and over-the-top. A member of the platoon is briefly captured, but escapes after essentially making an arch enemy out of a Japanese officer. Later, a Japanese attack nearly overruns the American lines, until Sgt Butsko and a half-dozen other recon platoon members show up in a truck and let loose with a submachine gun barrage. The final action scene is a counter-attack on the Japanese--sneaking up on enemy bunkers at night to take them out before rushing the position.
Along the way, Levinson continues to provide us with characters who are often real jerks, but in the end are great soldiers who watch out for each other.