几年后,赵奢去世了。这一年正好秦国军队来打赵国,赵国派老将廉颇带20万大军迎战。廉颇根据敌强我弱的形势,命令士兵们坚守阵地,绝对不可主动出战。
This is from the Standard Course Book of HSK5, section 15.
Baidu and Google say that here 我 means we and indeed according to dictionaries 我 not only means I, but it can also mean "we".
So when should 我 mean I and when we? And what is the difference between 我 and 我们 as we?
Simply, the context determines when the 我should mean I and when we, and 我 as we is just the short version of 我们? Or is there another rule we should know?