What's the meaning of 'about' in this sentence?

Question

I found this sentence and I have no idea about the usage of "about" here. Can you please explain the meaning and usage of "about" in this sentence?

This is not what people would have wanted to hear, but this was my experience of the war. It was training and transfers and even more training. It was about weekend passes and my first visit to California beach, where I laid eyes on the Pacific for the very first time.

Answer 1

I got it now. It means that it (the experience) was about .... If it's not the right answer, please correct me.