U.S. officials have indicated that the Americans might be closer to combat, though not at the front lines.

美国官员表示，美国士兵很可能会参与战斗，但不是在前线。

He says they are using what you call a " human wave, " where you just throw soldiers at the front line and more soldiers behind them.

他说，他们正在使用所谓的“人浪战术”，就是把士兵扔到前线，然后在他们后面再放更多的士兵。

And so it's really rewarding to know that I am like right at the front lines and risking my life in order to help the lives of everyone else that are back home.

知道自己就在前线，冒着生命危险去援救家乡其他人的生命，真的很有成就感。