Corporal Rivera was a soldier who fought on Makin Atoll. You can see him if you don’t follow Roebuck and Sullivan, but climb the platform with Snider, Denny and Slayback. At the end of the platform, you can see a Marine fighting with a Japanese.
If you go right with Sullivan and Roebuck, Rivera dies. But if you go left, you have a chance to kill the Japanese. Rivera will try to find cover, but can be killed in the process. If he survives after that, he fights the machine gun nest with the others. He then dies in the banzai attack with Lozano and Rooker.
Interestingly, Denny dies at the machine gun nest for no reason if Rivera and Lozano survive. Actually, that would have been Ryan’s part. Rivera was fighting with a Thompson.
Heroes (Call of Duty)
The Call of Duty series has existed since 2003 and in addition to various spin-offs, including for the handheld systems Nintendo DS and Sony PSP, 14 major titles of the series have now been released. Ever since the first part of the series, great emphasis has been placed on the online multiplayer mode in addition to the single-player campaign, which is also reflected in the development of the shooter series. Since the first Call of Duty, World at War, which was developed exclusively by Treyarch, each part also included cooperative challenges that you could play together with friends. The latest installment, Call of Duty: World War II, also features an extended multiplayer mode that puts you and your friends in the combat zones and famous battles of World War II. Using the divisions, you’ll be able to choose between the deadly sniper and the brute armored division and support your comrades in battle. In addition, World War II also has a zombie mode “Nazi Zombies”, as in its predecessor Call of Duty: Black Ops. Face the monsters of the Third Reich and win glory and honor.