考研

Just as the code breaking has its wider relevance in the struggle for Spain, so his attempts to make his way up the promotion ladder speak volumes about British society.

解析：just as…, so 正如……也。In the struggle for Spain 做状语，在翻译时可放has its…前翻译，to make his way up the promotion ladder 做后置定语修饰attempts. Speak volumes 说了大量(提供了许多信息)。

参考译文：正如码破译在争夺西班牙的斗争中有其更广泛的意义，他在晋升途径上的尝试也提供了很多关于英国社会的信息。