When is your husband ready for children?

My husband and I have been married since Dec. 27, 2014 and together 4 years. We are a very young couple. He's 20 and I'm 22. All I've wanted my entire life is a baby... there's nothing else in this world I want more! I'm ready at any time haha! But I'm not sure about my husband... He wants kids almost as much as I do but hasn't said he's not ready. Men mature slower and that's my concern. I don't want having children too early to affect our marriage.  We are military and he is deploying in April :/ so that makes me want babies even more because of the constant alone time and missing my other half! When have yall noticed when your partner was ready for children?