Sad looking ahead

This is our life and was our decision to have another baby but tonight I’m emotional looking ahead at the next year and half of our lives as we got dates for my husbands upcoming detachments and deployment. Never done this with a baby before. He will be gone for a month at a time twice between the time baby is born and six months old. Thank god he is missing a six week detachment that would have had him leaving when baby is ten days old. But then when he’s six months old my husband will leave for eight months and miss everything that happens between 6-18 months basically. Crawling, walking, talking, Halloween, thanksgiving, Christmas, first birthday etc. like I said I’ve never done this with an infant before and all I can think about is the guilt of everything he will miss and worried our son won’t know him when he gets back. We will find a routine and be fine I know but tonight I think I just want to allow myself to cry a little.