I spent a few years in the OSS.

我在战略情报局待了几年。

He means OSS. This is related to the Manhattan Project.

他是说战情局 事关曼哈顿计划。

A Chief of Staff with ties to the OSS? Funding from HUAC?

主治医生跟战略情报局有联系？还是非美活动调查委员会资助的？

He was an agent for the OSS, the precursor to the CIA, posted to South-East Asia at the end of the second world war.

他曾是美国战略情报局（中央情报局前身）的间谍，在二战末期被派往东南亚。

Before the OSS was formed – before it began, many different U.S. government agencies were involved in a little bit of intelligence work here, a little bit there, but it wasn't a very effective way to gather information – It didn't work very well.

在 OSS 成立之前——在它开始之前，许多不同的美国政府机构都参与了这里的情报工作， 那里的情报工作，但这并不是一种非常有效的收集信息的方式——它不是很有效出色地。