paragraph about the battle of Fromelles

Can you help me write a introduction paragraph about the battle of Fromelles which occured during worl war 1

Have you looked up the information you will need to write the paragraph? Do that first, then list the things you want to include in the paragraph. If it's just an introductory paragraph, you probably just want to provide basic information about the battle and what happened because of it. Working from the list, draft your paragraph. Post it here for feedback.

Do your research, then think of something you can say about the battle that you believe is true (or at least defensible in an essay of whatever length you have to write) but that at least some people would disagree with. That gives you a thesis. Then, think of what sort of evidence you have for that thesis, and summarize it. By that point, you've got most of your introductory paragraph done.