Honor Bound (Honor Bound 1)

It's 1942. A Marine aviator, an Army paratrooper and demolitions expert, and a non-com radio man are on an impossible mission for the OSS - sabotaging the resupply of German ships and submarines - by any means necessary!
First Lieutenant Cletus Frade is fresh from Guadalcanal. He teams up with Second Lieutenant Anthony Pelosi and Sergeant David Ettinger for the most critical OSS operation of the war. Under the direction of the mysterious Colonel Loman, they venture into a simmering stew of German and Allied agents, collaborators, and government security thugs, of men and women hiding their pasts and plotting their futures - all in supposedly neutral city of Buenos Aires.