Yes, Sir!

在许多和美军军事行动相关的电影里， 可以看到关于士兵对军官礼仪的片段
"band of brothers"

[confronting the replacement who shot Grant]

Speirs: Where's the weapon?

Replacement: What weapon?

[smacks him with his pistol]

Speirs: When you talk to an officer, you say "sir".

当士兵向长官说话的时候, 不厌其烦的在前面加上， sir, 例如

sir, yes, sir
sir, roger that
yes sir
rangers leads the way,sir

还有一个相当重要的是，士兵向长官报告的时候应当站立 , 下次搜集案例再讲。