The enemy becomes a comrade in arms mostly to survive, his comrades become enemies mostly for money.

敌人变成战友多半是为了生存，战友变成敌人多半是为了金钱。

youdao

But to trigger the heart tripwires of a man, a movie has to focus on him staying true to his word, whether it's a promise made to a lover, a comrade-in-arms, or a sick grandson.

不过要想触动一个男人的心弦，电影的重点要在于信守诺言，不管这个承诺对象是恋人，战友还是生病的孙子。

youdao

This is the relationship between the two is quite complex, is a traditional friendship and comrade-in-arms.

这两者之间的关系还是挺复杂的，传统是友好的战友。

youdao

That post, along with numerous rants on the subject on CNBC, apparently led to my invitation to testify on the subject before a Congressional Subcommittee in March 2009, which I did alongside my comrade in arms, Bill Isaac, former Chairman of the FDIC.

FORBES: FASB's Return to Mark-to-Market Sanity